JP2506364B2 - Fixture - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a stationary fixture that can be freely attached to a desired position of a columnar object. More specifically, for example, an attachment useful as a means for fixing various equipment or components attached to the main pipe in an oil well, or pipe fittings for mounting various auxiliary pipes to the main pipe or for protecting the main pipe itself. Regarding the ingredients.

2. Description of the Related Art Up to now, a pipe fitting or a main pipe protector for fitting pipes attached to a main pipe to the main pipe is mounted on a fitting made in conformity with the standard of the main pipe, and the fitting is hinged or , It was fixed to the main pipe with screws. However, in such a method, a strong tightening force is required to prevent the pipe fitting or the like from moving upward or downward. However, due to problems such as damage to the members, it was not possible to generate a very large tightening force. Moreover, this tightening work took a long time.
Therefore, the applicant has previously proposed the tubing protector (JP
61-237793). However, this method cannot be said to have completely facilitated the mounting work. This is because the previous application was mainly the invention of the pipe fitting itself, and although fixing it to the main pipe was much easier than before, there was still room for improvement.

Problems to be Solved by the Invention According to the conventional methods, the pipe fitting is attached to the main pipe by screwing or the like. Therefore, there are drawbacks such that the mounting work is difficult, it is easily loosened, and the upward or downward movement cannot be reliably prevented. The present invention seeks to overcome these disadvantages.

Means for Solving the Problems In order to solve the above problems, the present invention includes an outer cylinder and an inner cylinder surrounding a main pipe, and functions between both cylinders in both directions such as upward or downward, rightward or leftward. By forming a taper cam surface for sliding the outer cylinder with respect to the inner cylinder, the outer cylinder can be surely stopped with one touch with respect to the main pipe.

The inner cylinder firmly holds the outer surface of the main pipe, and the outer cylinder slides with respect to the inner cylinder, whereby the outer cylinder can be quickly stopped at any position with respect to the main pipe by the cam action provided between the both cylinders. By mounting a desired device such as a pipe fitting on the outer cylinder, it can be used very effectively not only as a pipe protector but also for various purposes in a place where there is no uneven surface.

Embodiment FIG. 1 is a perspective view showing an example of a fixture 10 according to the present invention. As shown in FIGS. 2 and 3, the fitting 10 is a cylindrical housing having a generally circular cross section, that is, an outer cylinder 12, an inner cylinder 14 inside the outer cylinder 12, and an inner cylinder 14. And preferably a resilient lining plate 16.

The outer cylinder 12 is composed of a pair of semicircular cylinders 20 and 22. Both cylinders 20,
22 has substantially the same form. Therefore, only the tubular body 20 will be described in detail. A pair of pin receiving hinges 24, 26, 28, 30 are fixed to both ends of the tubular body 20 in alignment with each other in the axial direction. A pair of raised portions 32, 34 preferably having a triangular cross section are provided on the upper and lower portions of the inner surface of the tubular body 20 at equal intervals. Further, a cutout 36 is provided at one end edge of the tubular body 20. The position, the number, and the shape of the hinge, the position of the notch 36, the shape of the number, and the like can be changed as appropriate. Further, the notch 36 can be omitted in some cases. Similarly, the number, position, and shape of the raised portions 32, 34 can be freely selected as well. Further, it is preferable that the upper and lower edge portions of the tubular body 20 are integrally provided with raised portions 38 and 40 having a shape as if the raised portion 32 or 34 is divided into two at the top (FIGS. 3 and 4). reference).

As shown in FIG. 3B, the inner cylinder 14 is composed of a pair of semicircular cylindrical bodies 42, 44 having a smaller diameter than the cylindrical bodies 20, 22. Both cylinders 42,
44 have substantially the same shape. Therefore, the cylindrical body 42 will be described in detail. The inner cylinder semi-circular cylinder body 42 has an outer surface having substantially the same curvature as that of the inner surface of the outer cylinder semi-circular cylinder body 20. Further, the cylindrical body 42 has a pair of cutout portions 46 and 48 at the top and bottom. A hook portion 50 is formed integrally at the center of one edge, and a hinge 52 is preferably integrally formed at the other edge. It should be noted that at least hinges provided on the cylinder 42 and the cylinder 44
It is necessary that 52 and 53 are vertically offset from each other.

As shown in FIGS. 2 and 3C, the lining 16 is a friction lining fixed to the inner surfaces of the inner cylinder semicircular cylinders 42, 44 by, for example, gluing or screwing, and is preferably made of rubber or the like. Three pieces are shown in FIG. 3C, but this is because the inner cylinder semi-circular cylinders 42, 44 are divided into three parts by cutout parts 46, 48. If the cutout parts are When only one tubular body 42 is formed in one direction in the vertical direction, only one lining 16 is required. When only one cutout is provided in the center of the cylindrical body 42, the lining may be two. In Fig. 2, the central lining is shown larger than the other upper and lower linings, but this is not an essential requirement,
It goes without saying that the size and the number of cutout portions can be any size. Further, the lining 16 can be replaced by lining or coating a friction lining on the inner surfaces of the inner cylinders 14, 14.

Each lining 16 is fixed to a predetermined position on the inner surface of the inner cylinder 14, 14. Alternatively, the friction lining is applied to the inner surfaces of the inner cylinders 14 and 14 by a known means such as lining, coating or dobbing.

Next, the left and right inner cylinders 14, 14 are brought into contact with the inner surfaces of the left and right outer cylinders 12, 12, respectively. At this time, the hook portions 50 of the inner cylinders 14, 14 are fitted into the notches 36, 36 of the outer cylinders 12, 12 so that the inner cylinder can move up and down with respect to the outer cylinder, but it is not separated from there. However, the hook portion 50 and the notch 36 are not indispensable requirements, and the present invention functions normally even without this. However, these hooks and notches allow easy mounting during actual use. Therefore, if necessary, means other than the hook portion and the notch can be sufficiently replaced. Each member has such a size that when the outer cylinder and the inner cylinder are brought into contact with each other, the cutout portions 46, 48 of the inner cylinder 14, 14 straddle the raised portions 32, 34 of the outer cylinder with some margin. (See Figure 2).

Then, the left and right outer cylinders 12, 12 are struck against each other. At that time, the hinges 28, 30 and 25, 27 on the one side and the hinges 52, 53 on the inner cylinder are aligned with each other in a line. Then from above hinge 28
Insert the hinge pin 54 (FIG. 2) toward 30.

When using the fitting 10 of the present invention, for example, the pipe is hugged by this fitting 10 at a predetermined position of the main pipe in an upright oil well, and the hinges 24, 26 on the other side of each outer cylinder 12, 12 are provided. Combine 29,31 and insert another pin into them. A lining 16 provided on the inner surfaces of the inner cylinders 14 and 14 contacts the outer surface of the pipe and presses the surface. Next, the outer cylinders 12, 12 are lowered. The inner cylinders 14, 14 stop on the pipe surface through the lining 16, but the outer cylinders 12, 12
After moving a little downward, the raised portions 32, 34 of the outer cylinders 12, 12 or the cam surfaces are pressed against the upper surfaces of the cutout portions 46, 48 of the inner cylinders 14, 14.
Stop there. For this reason, the outer cylinders 12 and 12 cannot move downward from there, and stand still there. Since the cam surface is provided in both upper and lower directions, it is useless when using the fixture 10.

It is easy to make the ridges 38, 40 at the upper and lower ends of the outer cylinder 20 straight as shown in FIG. 4A, but if the meat outside the ridges is removed as shown in FIGS. 4B and 4C. Of course, the weight of the fixture 10 can be reduced. Further, in FIGS. 1 to 4A, two raised cam surfaces of the outer cylinder 20 are formed in the center, but this may be one or three or more. Similarly, the inner cylinder can be appropriately modified according to the shape and number of the raised cam surfaces of the outer cylinder.

FIG. 5 shows an embodiment in which the cam surface raised portion 33 is formed on the inner cylinder side.

FIG. 6 shows an embodiment in which the outer cylinder 58 and the inner cylinder 60 each comprise a flat unit member 62. According to this example, the same effect can be obtained by connecting a plurality of unit members 62 with pins as shown in FIG.

FIG. 8 shows that a protrusion 61 is integrally provided on the back of the inner tubular body 58,
This protrudes from the long hole 64 provided in the outer cylinder 63, and this protrusion
This is an example in which a pin is inserted into a hole 66 provided in 61 to prevent the inner tubular body 58 from being pulled out. By using this means, the hook portion 50 and the hinge 52 shown in FIG. 3B are unnecessary.

As will be appreciated by those skilled in the art, in FIG.
Has an approximately semi-circular cross section, but it can be similarly used in a quadrant and a quadrant. Further, in the case of FIG. 7, the object to be attached may be not only a circular shape but also a prism. In addition, when the fixture of the present case is longer or shorter than the perimeter of the object to be attached, the flat length of a flat unit or a predetermined unit as shown in FIG. 6 can be adjusted so that the perimeter of the fixture can be adjusted. Prepare an auxiliary cylinder that has a circular shape with
It is also possible to increase or decrease them appropriately. By varying and combining these shapes and quantities (for example, the examples of FIGS. 4 and 5), it is possible to adapt to various uses.

The attachment may be made of metal, ceramics, synthetic resin, or the like.

 A specific example of use of this fixture is described below.

As a method for recovering highly viscous and heavy oil in an oil well, there is a water vapor injection method. Then, as a type of steam injection method, there is a method of increasing steam and generating oil from a DHSG (Down Hole Steam Generator) installed at the bottom of the mine to improve the thermal efficiency of the entire system, thereby improving the fluidity of oil and increasing the recovery rate. At this time, along with the tubing pipe, the pipe that sends water, gas, etc. to the DHSG must be lowered into the deep pit. The tubing protector or pipe fitting is
Attached to a tubing pipe by a fitting and used to hold and protect the pipe. When the tubing pipe is lowered into the mine or when it is pulled up, the tubing pipe comes into contact with the mine wall and a large load is generated in the vertical direction. Since the fixture according to the present invention has a great strength in the axial direction, it is considerably effective in such a case. Also, assuming that the tubing pipe is 1500 m and tubing protectors are installed every 10 m, 150 tubing protectors will be installed. In this case, it is easy to install and remove.
Becomes important. From this point of view, it can be seen that it is extremely effective as a fixture for the tubing protector of the present invention.

EFFECTS OF THE INVENTION According to the fixture of the present invention, the taper cam surface generates strength substantially proportional to the external force, so that a large static force can be generated in one direction such as the vertical direction and the horizontal direction in accordance with the external force. Also, the installation work is simple and can be accomplished in a short time because the main pipe is pinched and stopped with a pin. Furthermore, the removal work can be accomplished very easily by simply pulling out the pin, and in addition, the attachment work and the main pipe or the auxiliary pipe are not damaged during the attachment / detachment work, which is safe. In addition, the fixture is easy to manufacture, and its own weight is light, which makes it convenient to carry.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a fixture showing an example of the present invention, and FIG.
The figure is a developed view of FIG. 1, FIG. 3A, FIG. 3B, and FIG.
Exploded explanatory views showing the outer cylinder semi-circular cylinder body, the inner cylinder semi-circular cylinder body and the lining plate, respectively, in FIGS. 4A, 4B and 4C.
Each of the figures is a state diagram in which the fixture of the present invention is attached to a body to be attached, and the attachment state diagram of the fixture shown in FIG. 2 and the attachment state diagram showing another two embodiments, respectively. FIG. 6 is a view similar to FIG. 2 showing still another embodiment, and FIG. 7 is a top view showing a state in which the unit of FIG. 6 is assembled. FIG. 8 is a diagram showing still another embodiment. Explanation of symbols 10 ... Fixture, 12 ... Outer cylinder 14,15 ... Inner cylinder, 16 ... Lining plate 20,22 ... Outer cylinder semi-circular cylinder 32, 33, 34 ... Raised part, 42, 44 ... Inner cylinder semi-circular Cylindrical bodies 46, 48 ... Cutout parts, 58 ... Outer cylinder 60 ... Inner cylinder, 62 ... Unit member

Claims (8)

(57) [Claims] 1. A plurality of inner members engaging with an object to be mounted,
A plurality of outer members holding various auxiliary members and the like, both members being in a sliding relationship with each other, at least one of the inner member and the outer member having at least one tapered cam surface At least one engaging the cam surface
A fitting having two notches, wherein the plurality of outer members are pivotally connected to each other in a closed annular shape. 2. The fitting according to claim 1, wherein the inner surface of the inner member is provided with a non-slip lining. 3. The fixture according to claim 2, wherein the inner member and the outer member are made of metal and the lining is a heat resistant elastic body. 4. The fixture according to claim 3, wherein the lining is heat resistant rubber. 5. The fixture according to claim 1, 2 or 3 or 4, wherein the inner member and the outer member are made of ceramic or synthetic resin. 6. The fixture according to claim 1, 2 or 3 or 4 or 5, wherein the inner member and the outer member are circular components. 7. The fitting according to claim 1, 2 or 3 or 4 or 5, wherein the inner member and the outer member are flat components. 8. A method according to claim 1, further comprising means for engaging with the inner member and the outer member.
Item or item 3 or item 4 or item 5 or item 6 or item 7
The fixture described in paragraph.