JP6879622B2 - Lead lead wire fixing jig, lead lead wire fixing installation method - Google Patents

Description

The present invention relates to a lead wire fixing jig for fixing and installing a lead lead wire arranged in an electric facility such as an electrostatic precipitator, and a lead lead wire fixing installation method using the jig.

For example, in electrical equipment such as an electrostatic precipitator, a lead wire (lead lead wire) made of lead is arranged in order to apply a high DC voltage such as a discharge wire. In the case of an electrostatic precipitator, this lead lead wire is connected to a power supply device, and a voltage is applied to the discharge wire suspended from the FRP grid (upper grid) via the lead lead wire ( For example, see Patent Document 1).

In the electrostatic precipitator, for example, an existing member such as a lead square bar exists above the upper grid, and such an existing member and a lead lead wire are connected and released via the existing member. Voltage is efficiently applied to the wire.

However, the connection between an existing member such as a lead square rod and a lead lead wire is generally performed by lead welding, and it is difficult to easily perform the connection work due to the technical peculiarity of the lead welding. It was a cause of increasing the equipment manufacturing cost and manufacturing time.

In addition, in an electrostatic precipitator that takes in corrosive gas and applies a high voltage for processing, the lead lead wire deteriorates over time, so regular replacement work is required from the viewpoint of preventing a decrease in dust collection efficiency. You will need it. Even in such replacement work, first, the lead lead wire fixed by welding to the lead square rod is removed, then a new lead lead wire is taken into the electrostatic precipitator, and then inside the device. It was necessary to install and fix it by performing lead welding work again.

Further, since it is of course necessary to stop the operation of the electrostatic precipitator during the replacement work, the lengthening of the replacement work has been a cause of a decrease in the operation efficiency.

JP-A-2017-042751

The present invention has been proposed in view of such circumstances, and in an electric facility for arranging a lead lead wire such as an electrostatic precipitator, the lead lead wire is fixed and installed by a simple operation. The purpose is to provide the technology that enables.

As a result of diligent studies, the present inventor has a base fixed to an existing member of electrical equipment and a lead lead wire having a joint surface mounted on the upper surface of the base and welded to the lead lead wire. We have found that the above-mentioned problems can be solved by using a lead wire fixing jig provided with a joining table, and have completed the present invention.

(1) The first invention of the present invention is a lead lead wire fixing jig used for an electric facility having a lead lead wire for installing and fixing the lead lead wire, and is an existing member of the electric facility. It is provided with a rectangular base fixed to the base and a lead lead wire joining base which is placed on the upper surface of the base and has a joining surface to which the lead lead wires are welded and joined. The lead wire joining base is made of a nickel alloy, and the base and the lead lead wire joining base are integrally fixed by bolting from the upper surface of the lead lead wire joining base. It is an ingredient.

(2) The second invention of the present invention is the lead wire fixing jig in which the nickel alloy is Hastelloy in the first invention.

(3) In the third aspect of the present invention, in the first or second invention, the joint surface of the lead lead wire joint stand is a joint surface that is lead welded to the lead lead wire. It is a fixing jig.

(4) In the fourth invention of the present invention, in any one of the first to third inventions, the existing member in the electric equipment is made of lead, and the base and the existing member are connected by lead welding. It is a jig for fixing lead wires to be fixed.

(5) In the fifth aspect of the present invention, in any one of the first to fourth inventions, the bolt used for tightening the bolt is a lead wire fixing jig made of nickel alloy.

(6) The sixth invention of the present invention is, in any one of the first to fifth inventions, the electric equipment for fixing a lead lead wire, which is an electrostatic precipitator that takes in and processes a corrosive gas. It is a jig.

(7) The seventh invention of the present invention is a lead lead wire for fixing and installing a lead lead wire in an electric facility by using the lead lead wire fixing jig according to any one of the first to sixth inventions. In the fixed installation method, a step of welding and fixing a rectangular base constituting the lead lead wire fixing jig to an existing member of the electric equipment, and fixing the lead lead wire outside the electric equipment. The step of welding and joining the lead lead wire to be arranged in the electric equipment to the joint surface of the lead lead wire joining stand constituting the jig, and the electric lead wire joining stand to which the lead lead wire is joined are electrically connected. It is a lead lead wire fixing installation method including a step of taking it into the equipment and integrally fixing the lead lead wire joining base to the base fixed to the existing member.

According to the lead wire fixing jig according to the present invention, in an electric facility such as an electrostatic precipitator in which a lead lead wire is arranged, the lead lead wire can be fixed and installed by a simple operation.

It is a schematic diagram which shows an example of the structure of the lead lead wire fixing jig. A model showing a state in which a lead lead wire fixing jig is fixed to a lead angle rod which is an existing member constituting an electrostatic precipitator, and the lead lead wire is installed and fixed by the lead lead wire fixing jig. It is a figure.

Hereinafter, specific embodiments of the present invention will be described in detail. The present invention is not limited to the following embodiments, and various modifications can be made without changing the gist of the present invention.

≪1. Configuration of lead wire fixing jig ≫
The lead (Pb) lead wire fixing jig according to the present embodiment is used in an electric facility having a lead lead wire, and is a lead lead wire fixing jig for installing and fixing the lead lead wire. Examples of the electric equipment include an electrostatic precipitator and the like. In the following, an example of installing and fixing the lead lead wire provided in the electrostatic precipitator at a predetermined position will be described.

FIG. 1 is a schematic view showing the configuration of a lead wire fixing jig. Further, in FIG. 2, the lead lead wire fixing jig 1 is fixed to a lead angle rod which is an existing member constituting the electrostatic precipitator, and the lead lead wire is installed by the lead lead wire fixing jig 1. It is a figure which shows the state at the time of fixing.

As shown in FIG. 1, the lead lead wire fixing jig 1 is mounted on a rectangular base 11 fixed to an existing member (52) of the electrostatic precipitator 5 and an upper surface of the base 11. It includes a lead lead wire joining base 12 having a joining surface 12a to which the lead lead wire 51 is welded and joined.

[Base]
The base 11 has a rectangular parallelepiped shape that constitutes the base of the lead lead wire fixing jig 1, and is used by being fixed to a lead angle rod 52 that is an existing member constituting the electrostatic precipitator 5 on the lower surface thereof. ..

Here, in the electrostatic precipitator 5, as shown in FIG. 2, a plurality of lead angle rods 52 are provided in parallel at predetermined intervals, and a conductive FRP is provided below the lead angle rods 52. A grid (upper grid) 53 made of a product or the like is provided. Further, a discharge line 54 is suspended from the upper grid 53. In the electrostatic precipitator 5, the DC high voltage (load voltage) of the negative electrode supplied from the power supply device (not shown) is transmitted to the lead angle rod 52 via the lead lead wire 51 and suspended from the upper grid 53. It is applied to the discharged line 54.

The base 11 is used by being fixed to the lead angle rod 52 as described above, and more specifically, when the electrostatic precipitator 5 is assembled, the lead angle rod 52 is attached to the lead lead described later. It is attached and fixed separately from the wire joining base 12. _{The portion indicated by "P 1} " in FIG. 1 indicates the location where the base 11 is fixed to the lead angle rod 52, and is fixed by, for example, lead welding. Therefore, the base 11 is not normally removed from the lead angle rod 52, and will be described in detail later. However, the lead lead wire joining base 12 is removed at the time of maintenance, replacement of the lead lead wire 51, or the like.

The base 11 is composed of a lead member (lead angle rod 52) and a material that can be welded and fixed by lead welding or the like. Specifically, the material is preferably a nickel alloy, more preferably Hastelloy. Hastelloy can be effectively fixed by welding to a mating material made of lead, and has excellent corrosion resistance, and is suitable as a member used in the electrostatic precipitator 5. As Hastelloy, there are various compositions such as A, B, C, and F, and any of them can be used, but Hastelloy C is particularly preferable.

It is also conceivable that the base 11 is made of the same lead as the square bar 52 from the viewpoint of joining with the lead square bar 52. However, lead is a relatively fragile metal and may not be able to be fixed stably. On the other hand, it is also conceivable to use titanium, for example, with an emphasis on strength for stable fixing. However, since acid gas may be taken into the electrostatic precipitator 5 to create a highly corrosive environment, titanium having inferior corrosion resistance is frequently replaced. The same applies to the lead lead wire joining base 12 described later.

The base 11 is provided with bolt holes 12b for integrally fixing with the lead lead wire joining base 12, which will be described later, at predetermined positions. In the bolt hole 11b provided in the base 11, the bolt 20 inserted and penetrated from the bolt hole 12b on the upper surface of the lead lead wire joining base 12 is inserted and screwed. As a result, the base 11 and the lead lead wire joining base 12 are integrally fixed. The bolt hole 11b is not a through hole but a concave shape halfway through the base 11.

The thickness (length in the height direction) of the base 11 is not particularly limited, but if it is too thin, the life may be shortened and the replacement frequency may increase. On the other hand, if it is too thick, the manufacturing cost will increase, and the length of the bolt 20 for fixing the base 11 and the joining base 12 will also increase, which may reduce the fixing stability. Specifically, the thickness may be, for example, about 10 mm to 60 mm, although it depends on the size of the electrostatic precipitator 5.

[Lead lead wire joining stand]
The lead lead wire joining base (hereinafter, also simply referred to as “joining base”) 12 is a member that is placed on the upper surface of the base 11 and integrally fixed to the base 11. That is, the base 11 and the lead lead wire joining base 12 are configured as separate members. Further, the upper surface thereof has a joint surface 12a to which the lead lead wire 51 is welded and joined.

Conventionally, the lead lead wire 51 provided in the electrostatic precipitator 5 has been directly fixed to the surface of the existing lead square bar 52 provided on the upper part of the upper grid 53 by lead welding or the like. However, lead welding requires a special technical operation, and it is very difficult to perform welding work inside the device after assembling the electrostatic precipitator 5. Further, in the replacement work of the lead lead wire 51, it is necessary to remove the lead lead wire to be replaced from the welded portion and then re-weld the new lead lead wire in the apparatus, which is suitable for installation and maintenance. It took time.

On the other hand, the lead lead wire fixing jig 1 according to the present embodiment is a jig for fixing the lead lead wire, and by using this jig, the lead lead wire 51 can be directly connected as in the conventional case. It will be lead-welded to the lead angle rod 52 and will not be fixed. The lead lead wire fixing jig 1 is composed of a base 11 and a joining base 12 having a joining surface 12a with the lead lead wire 51, and each of them is a separate member. The lead lead wire is attached to the inside of the electrostatic precipitator 5 in a state where the 51 and its joint base 12 are fixed in advance by welding joint to the outside of the electrostatic precipitator 5 and integrated. It can be easily placed inside. Further, when replacing the lead lead wire, the joining base 12 to which the lead lead wire 51 is joined can be easily removed by separating it from the base 11, and the replacement work can be performed efficiently.

Specifically, as shown in FIG. 1, the joining base 12 is a rectangular parallelepiped member like the base 11, and the upper surface thereof is a joining surface 12a to which the lead lead wires 51 are welded and joined. Further, the joint surface 12a is provided with a bolt hole 12b at a position different from the joint portion with the lead lead wire 51. The bolt hole 12b is a through hole that penetrates to the lower surface of the joint base 12 (the surface opposite to the joint surface 12a).

In the joining table 12, the lead lead wire 51 and the joining surface 12a are joined by lead welding. Portions indicated by "P _2" in FIG. 1 is a lead welding portion of the lead lead 51 at the joint surface 12a. Therefore, the joining table 12 is made of a material capable of welding and fixing the lead lead wire 51 by lead welding, and is preferably a nickel alloy, more preferably Hastelloy, for example. As described above, Hastelloy is particularly preferable because it can be effectively fixed by welding to a mating material made of lead and has excellent corrosion resistance.

Further, the joint base 12 is integrally fixed to the base 11 that is present at the lower portion by inserting the bolt 20 into the bolt hole 12b provided on the joint surface 12a and tightening the bolt. More specifically, when a bolt is inserted into the bolt hole 12b of the joint surface 12a, the bolt penetrates the joint base 12 while being screwed, and the bolt hole 11b provided at a corresponding position on the base 11 Will be inserted into. As a result, the base 11 and the joining base 12 are integrally fixed.

When the bolt 20 is inserted from the joint surface 12a of the joint base 12 and the bolt is tightened, it can be performed via the washer 21 as shown in FIG. Further, the bolt 20 and the washer 21 can be made of a nickel alloy (Hastelloy or the like) like the constituent material of the joining base 12. As a result, loosening of the bolt 20 and deterioration due to corrosive gas can be prevented, and the lead lead wire 51 can be stably fixed.

The thickness (length in the height direction) of the joining table 12 is not particularly limited, but if it is too thin, the life may be shortened and the replacement frequency may increase. On the other hand, if it is too thick, the manufacturing cost increases, and the length of the bolt 20 for fixing the joint base 12 and the base 11 also becomes long, which may reduce the fixing stability. Specifically, the thickness may be, for example, about 5 mm to 50 mm, although it depends on the size of the electrostatic precipitator 5.

≪2. Fixed installation of lead lead wire using a lead wire fixing jig ≫
Next, in the electrostatic precipitator 5, the flow of fixing and installing the lead lead wire using the lead lead wire fixing jig 1 will be described.

As described above, the lead lead wire fixing jig 1 is composed of a base 11 and a joining base 12 having a joining surface 12a with the lead lead wire 51, each of which is a separate member. In the arrangement of the lead lead wire 51 using such a lead wire fixing jig 1, first, at the time of assembling or maintaining the electrostatic precipitator 5, only the base 11 is used as the electrostatic precipitator 5. It is fixed to the surface of the existing lead angle rod 52 configured inside. Specifically, the base 11 is fixed to the lead angle rod 52 by lead welding or the like via the lower surface of the base 11 (the surface opposite to the upper surface to be joined to the joining base 12). In this state, only the base 11 is fixed in the electrostatic precipitator 5, and the lead lead wire 51 is not yet arranged.

Next, the lead lead wire 51 to be arranged in the electrostatic precipitator 5 is lead-welded to the joint surface 12a of the joint base 12 constituting the lead lead wire fixing jig 1. The welding of the joining table 12 and the lead lead wire 51 can be performed outside the electrostatic precipitator 5, in other words, at an appropriate place in the factory equipment, not inside the electrostatic precipitator 5. For example, it can be prepared in advance at another place when assembling the electrostatic precipitator 5. In this state, the base 11 and the joining base 12 are not yet integrally fixed, and the lead lead wire 51 is not arranged in the electrostatic precipitator 5.

Next, the joining table 12 to which the lead lead wire 51 is joined outside the electrostatic precipitator 5 is taken into the inside of the electrostatic precipitator 5, and fixed to the joining table 12 and the existing lead angle rod 52. Fix the set base 11 and the base 11. Specifically, the joint base 12 is placed on the upper surface of the base 11 so that the lower surface (the joint surface to which the lead lead wires 51 are joined) is in contact with the joint base 12, and then the bolt holes provided in the joint base 12 are provided. Insert the bolt 20 into 12b. Then, the joining base 12 and the base 11 are fixed by screwing the loaded bolts 20. The base 11 is also provided with a bolt hole 11b on the upper surface (the surface to be joined to the joining base 12), and the bolt 20 penetrating the joining base 12 is inserted into the bolt hole 11b of the base 11. Both are integrally fixed by.

By integrally fixing the joining base 12 to the base 11 in this way, the lead lead wire 51 joined to the joining base 12 can be taken into the inside of the electrostatic precipitator 5 and arranged. it can. Therefore, inside the electrostatic precipitator 5, it is not necessary to perform the work of lead-welding and arranging the lead lead wire 51 as in the conventional case, and the base 11 constituting the lead lead wire fixing jig 1 is not required. Only the work of bolting the joint base 12 and the joint base 12 needs to be performed.

Further, when the lead lead wire 51 is replaced due to deterioration or the like, there is no need to remove the lead lead wire 51 directly lead-welded to the existing lead square rod 52 as in the conventional case, and the base 11 It can be treated by loosening the bolt 20 fixing the joint base 12 and the joint base 12 to release the fixing, and removing the joint base 12 to which the lead lead wire 51 is joined from the electrostatic precipitator 5. Then, by reattaching the new lead lead wire 51 joined to another joining base 12 via the integral fixing of the base 11 and the joining base 12, the replacement work can be performed extremely easily. , The downtime of operation can be significantly reduced.

1 Lead wire fixing jig 5 Electrostatic precipitator 11 Base 11b Bolt hole 12 Joining base 12a Joint surface 12b Bolt hole 20 Bolt 21 Washer 51 Lead lead wire 52 (existing) Lead square bar 53 Upper grid 54 Discharge line

Claims (7)

It is a lead wire fixing jig used for electrical equipment having a lead lead wire and for installing and fixing the lead lead wire.
A rectangular parallelepiped base fixed by lead welding to an existing lead member in the electrical equipment,
A lead lead wire joining base, which is placed on the upper surface of the base and has a joining surface to which the lead lead wires are welded and joined, is provided.
The base and the lead lead wire joining base are made of nickel alloy.
The base and the lead lead wire joining base are joined to the concave bolt hole formed on the upper surface of the base and the penetrating bolt hole formed in the lead lead wire joining base. A lead wire fixing jig that is integrally fixed by inserting bolts from the top surface of the table and tightening the bolts. The lead lead wire fixing jig according to claim 1, wherein the nickel alloy is Hastelloy. The lead lead wire fixing jig according to claim 1 or 2, wherein the joint surface of the lead lead wire joint stand is a joint surface that is lead welded to the lead lead wire. The lead lead wire fixing jig according to any one of claims 1 to 3 , wherein the bolt used for tightening the bolt is made of nickel alloy. The electrical equipment is an electrostatic precipitator that takes in and processes corrosive gas.
The existing members are connected above the upper grid in which the discharge wire is suspended, and are lead square bars for guiding the voltage applied to the lead lead wire to the discharge wire, according to claims 1 to 4 . The lead wire fixing jig according to any one of the items. A lead lead wire fixing installation method for fixing and installing a lead lead wire in electrical equipment by using the lead lead wire fixing jig according to any one of claims 1 to 5.
A process of fixing a rectangular parallelepiped base constituting the lead lead wire fixing jig to an existing member of the electrical equipment by lead welding.
A step of welding and joining a lead lead wire to be arranged in the electric equipment to a joint surface of a lead lead wire joining stand constituting the lead lead wire fixing jig outside the electric equipment.
A step of incorporating the lead lead wire joining base to which the lead lead wires are joined into the electrical equipment and integrally fixing the lead lead wire joining base to the base fixed to the existing member by bolting.
Lead lead wire fixed installation method. This is a maintenance method for electrical equipment with fixed lead wires.
The lead lead wire is welded to the joint surface of the lead lead wire joining stand constituting the lead lead wire fixing jig via the lead lead wire fixing jig according to any one of claims 1 to 5. By doing so, it is fixedly installed on the existing member of the electrical equipment.
When removing the lead lead wire to the outside of the electrical equipment,
While the base that constitutes the lead lead wire fixing jig is still fixed to the existing member, loosen the bolt that integrally fixes the base and the lead lead wire joining base to fix the base. Release and remove the lead lead wire joining base to which the lead lead wire is welded to the outside of the electrical equipment.
Maintenance method.

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