Wellhead insulation device

Abstract

The present invention discloses a wellhead insulation device, which comprises a support frame, a suspension rope, an adjustable skeleton and an adjustable insulation sleeve. The device can adapt to wellheads of different types and specifications or wellheads with specific requirements by adjusting the telescopic length of the support frame, the hoisting length of the suspension rope, the shape of the adjustable skeleton and the shape of the adjustable insulation sleeve without changing the existing structures of various types of well covers and wellhead cover seats and without affecting the normal use of various types of well covers and wellhead cover seats. The present invention not only has excellent insulation effect, but also has novel design, simple structure and low cost, is very convenient to use and disassemble, and has a very wide range of applications.

Description

Technical field:

[0001] The invention relates to the technical field of wellhead insulation, and in particular to a wellhead insulation device. Background technology:

[0002] With the coming of winter in Northeast my country, North China, Northwest China and other vast areas of China, the average outdoor temperature is generally below zero degrees. Most wells with pipelines supplying liquid media rely only on the sealing of the manhole covers for insulation, and the pipelines inside the wells are easily frozen and cracked. In view of this situation, the insulation measure currently used is to set an insulation layer in the inner cavity of the manhole cover seat or inside the wellhead. However, this method either requires a special manhole cover and manhole cover seat, or the insulation layer is fixed in shape and can only cooperate with a fixed manhole cover seat or wellhead. Not only is the structure complex and costly, but it cannot be widely used. Summary of the invention:

[0003] The purpose of the present invention is to provide a wellhead insulation device which can be adjusted at will on the basis of the existing wellhead and can adapt to various wellheads.

[0004] The present invention is implemented by the following technical solutions: a wellhead insulation device, which includes a support frame, a suspension rope, an adjustable frame and an adjustable insulation sleeve;

[0005] The support frame is horizontally installed in the inner cavity of the manhole cover seat below the manhole cover, and the support frame includes at least one retractable support rod;

[0006] The adjustable skeleton is provided in the well below the well cover seat, and the adjustable skeleton is a collapsed body structure, which includes a horizontally arranged bottom frame, a plurality of spokes, a flexible belt, a support frame and at least three fixing ropes, wherein the shape of the bottom frame is smaller than the shape of the wellhead, a plurality of spokes are evenly distributed along the bottom frame and the bottom ends of a plurality of spokes are hinged to the bottom frame, the top ends of a plurality of spokes are movably connected to the closed part formed by the flexible belt, the length of the closed part is adjustable and the closed part can form a shape larger than the wellhead, the support frame is horizontally movably arranged in a space surrounded by a plurality of spokes, the shape of the support frame is a shape that is proportionally enlarged relative to the shape of the bottom frame and the shape of the support frame is smaller than the shape of the wellhead, at least three fixing ropes are evenly distributed along the support frame and the two ends of each fixing rope are movably connected to the bottom frame and the support frame respectively, and the length of the part of the fixing rope located between the bottom frame and the support frame is adjustable;

[0007] The support frame is connected to the adjustable frame through the suspension rope, the suspension length of the suspension rope is adjustable and the suspension rope includes at least three ropes, the top ends of at least three suspension ropes are evenly installed on the support frame, and the bottom ends are evenly fixedly connected to the bottom frame so that the adjustable frame is coaxial with the manhole cover seat;

[0008] The adjustable thermal insulation sleeve is arranged on the outside of the adjustable frame. When the opening at the top of the adjustable thermal insulation sleeve is opened, the shape of the opening is larger than the shape of the closed part of the flexible belt. When the opening is tightened, the top of the adjustable thermal insulation sleeve can be driven to buckle inwardly toward the inside of the closed part of the flexible belt to form a structure in which the shape of the opening is smaller than the shape of the closed part of the flexible belt.

[0009] Furthermore, an inverted L-shaped buckle extending outward is provided above both ends of the retractable support rod, the lateral part of the inverted L-shaped buckle is movably connected to the step of the manhole cover seat on which the manhole cover is placed, and the bottom end of the vertical part of the inverted L-shaped buckle is fixedly connected to the retractable support rod.

[0010] Furthermore, the support frame includes at least two retractable support rods, and at least two retractable support rods are stacked up and down and cross-arranged or integrally formed and cross-arranged.

[0011] Furthermore, the support frame includes two retractable support rods, which are overlapped and cross-arranged up and down, the vertical part of the inverted L-shaped buckle is a retractable structure, and the length difference between the vertical parts of the inverted L-shaped buckle of the two retractable support rods is greater than the thickness of the retractable support rod.

[0012] Furthermore, the lifting rope includes a lifting rope body and a lifting rope buckle. The support frame is provided with a first through hole corresponding to the lifting rope one by one. The lifting rope buckle is arranged at the first through hole. The top end of the lifting rope body passes through the first through hole and the lifting rope buckle in sequence, and the lifting length of the lifting rope is adjusted by the lifting rope buckle.

[0013] Furthermore, a second through hole is formed at the top of a plurality of the spokes, and the closed portion of the flexible belt is movably inserted into the second through hole.

[0014] Furthermore, the flexible belt includes a flexible belt body and a buckle, both ends of the flexible belt body pass through the buckle to form the closed portion, and the length of the closed portion is adjusted by the buckle.

[0015] Furthermore, the bottom frame is in the shape of a circle or an equilateral polygon.

[0016] Furthermore, the adjustable thermal insulation sleeve includes an adjustable thermal insulation sleeve body, a drawstring and a drawstring buckle. A drawstring channel is circumferentially arranged at the opening of the adjustable thermal insulation sleeve body. The drawstring is inserted into the drawstring channel and the length of the drawstring is greater than the length of the drawstring channel. Both ends of the drawstring pass through the drawstring buckle, and the size of the opening is adjusted by the drawstring buckle.

[0017] Furthermore, the bottom of the adjustable thermal insulation cover is fixedly connected to the bottom frame. Advantages of the present invention:

[0018] A wellhead insulation device provided by the present invention includes a support frame, a lifting rope, an adjustable skeleton and an adjustable insulation cover. It can adapt to wellheads of different types and specifications or wellheads with specific requirements by adjusting the telescopic length of the support frame, the lifting length of the lifting rope, the shape of the adjustable skeleton and the shape of the adjustable insulation cover without changing the existing structures of various types of manhole covers and manhole cover seats and without affecting the normal use of various types of existing manhole covers and manhole cover seats. The present invention not only has excellent insulation effect, but also has novel design, simple structure and low cost, is very convenient to use and disassemble, and has a very wide range of applications. Description of the drawings:

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 for Figure 1 A partial enlarged view of part A.

[0021] Figure 3 It is a schematic diagram of the structure of the present invention when the adjustable heat-insulating cover is not provided.

[0022] Figure 4 It is a schematic diagram of the structure when the present invention is used.

[0023] Figure 5 for Figure 4 A partial enlarged view of part B.

[0024] The markings of the components in the accompanying drawings are as follows:

[0025] Support frame 10, telescopic support rod 110, inverted L-shaped buckle 120, lateral part 121 of inverted L-shaped buckle 120, vertical part 122 of inverted L-shaped buckle 120, first through hole 130, hanging rope 20, hanging rope body 210, hanging rope buckle 220, adjustable skeleton 30, bottom frame 310, spoke 320, second through hole 321, flexible belt 330, closed part 331 of flexible belt 330, flexible belt body 3301, buckle 3302, support frame 340, fixing rope 350, adjustable insulation cover 40, opening 401 of adjustable insulation cover 40, adjustable insulation cover body 410, draw rope channel 411, draw rope 420, draw rope buckle 430, manhole cover 50, manhole cover seat 60, step 610 of manhole cover seat 60, wellhead 70. Specific implementation method:

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0027] Embodiment 1:

[0028] like Figure 1-Figure 5 As shown, this embodiment provides a wellhead insulation device, which includes a support frame 10, a suspension rope 20, an adjustable skeleton 30 and an adjustable insulation sleeve 40;

[0029] A support frame 10 is horizontally installed in the inner cavity of the manhole cover seat 60 below the manhole cover 50, and the support frame 10 includes at least one retractable support rod 110;

[0030] An adjustable frame 30 is provided in the well below the well cover seat 60. The adjustable frame 30 is a reverse platform structure, which includes a horizontally arranged bottom frame 310, a plurality of spokes 320, a flexible belt 330, a support frame 340 and at least three fixing ropes 350, wherein the shape of the bottom frame 310 is smaller than the shape of the wellhead 70, the plurality of spokes 320 are evenly distributed along the bottom frame 310 and the bottom ends of the plurality of spokes 320 are hinged to the bottom frame 310, the top ends of the plurality of spokes 320 are movably connected to the closed portion 331 formed by the flexible belt 330, and the length of the closed portion 331 is The degree of the fixed rope 350 is adjustable and the closed portion 331 can be formed into a shape larger than the wellhead 70. The support frame 340 is horizontally movably arranged in the space surrounded by the plurality of spokes 320. The shape of the support frame 340 is a shape that is proportionally enlarged relative to the shape of the bottom frame 310 and the shape of the support frame 340 is smaller than the shape of the wellhead 70. At least three fixing ropes 350 are evenly distributed along the support frame 340 and the two ends of each fixing rope 350 are movably connected to the bottom frame 310 and the support frame 340 respectively. The length of the portion of the fixing rope 350 located between the bottom frame 310 and the support frame 340 is adjustable.

[0031] The support frame 10 is connected to the adjustable frame 30 through the suspension rope 20. The suspension rope 20 has an adjustable suspension length and includes at least three suspension ropes. The top ends of the at least three suspension ropes 20 are evenly mounted on the support frame 10, and the bottom ends are evenly fixedly connected to the bottom frame 310 so that the adjustable frame 30 is coaxial with the manhole cover seat 60.

[0032] The adjustable thermal insulation cover 40 is sleeved on the outside of the adjustable frame 30. When the opening 401 at the top of the adjustable thermal insulation cover 40 is opened, the shape of the opening 401 is larger than the shape of the closed part 331 of the flexible belt 330; when the opening 401 is tightened, the top of the adjustable thermal insulation cover 40 can be driven to buckle inwardly toward the closed part 331 of the flexible belt 330 to form a structure in which the shape of the opening 401 is smaller than the shape of the closed part 331 of the flexible belt 330.

[0033] It should be noted that, in this embodiment, three fixing ropes 350 are taken as an example.

[0034] It should be noted that the shape of the wellhead 70 is the same as the cross-sectional shape of the inner cavity of the well cover seat 60 .

[0035] It should be noted that the adjustable thermal insulation cover 40 is made of soft thermal insulation material, such as a quilt.

[0036] This embodiment can adapt to wellheads of different types and specifications or wellheads with specific requirements by adjusting the telescopic length of the support frame 10, the lifting length of the lifting rope 20, the shape of the adjustable skeleton 30 and the shape of the adjustable insulation sleeve 40 without changing the existing structures of various types of manhole covers and manhole cover seats and without affecting the normal use of various types of existing manhole covers and manhole cover seats. This embodiment not only has excellent insulation effect, but also has novel design, simple structure and low cost, is very convenient to use and disassemble, and has a very wide range of applications.

[0037] As an example, an inverted L-shaped buckle 120 extending outward is provided above both ends of the retractable support rod 110, the lateral part 121 of the inverted L-shaped buckle 120 is movably connected to the step 610 of the manhole cover seat 60 on which the manhole cover 50 is placed, and the bottom end of the vertical part 122 of the inverted L-shaped buckle 120 is fixedly connected to the retractable support rod 110.

[0038] It should be noted that the transverse portion 121 of the inverted L-shaped buckle 120 is preferably flat, and the shape of its outer end is preferably a shape that is compatible with the outer contour of the step 610, such as an arc shape or other shapes (an arc shape is used as an example in this embodiment). Its thickness is as small as possible and a material with higher hardness is used to ensure that the normal placement of the manhole cover 50 is not affected while the clip is stable.

[0039] As an example, the support frame 10 includes at least two retractable support rods 110, and the at least two retractable support rods 110 are stacked up and down and cross-arranged or integrally formed and cross-arranged.

[0040] As an example, the support frame 10 includes two telescopic support rods 110, which are stacked and cross-arranged vertically, and the vertical part 122 of the inverted L-shaped buckle 120 is a telescopic structure. The length difference between the vertical parts 122 of the inverted L-shaped buckles 120 of the two telescopic support rods 110 is greater than the thickness of the telescopic support rods 110 to ensure that the horizontal parts 121 of the inverted L-shaped buckles 120 of the two telescopic support rods 110 that are stacked and cross-arranged vertically can be located in the same plane.

[0041] As an example, the lifting rope 20 includes a lifting rope body 210 and a lifting rope buckle 220. A first through hole 130 corresponding to the lifting rope 20 is opened on the support frame 10. The lifting rope buckle 220 is arranged at the first through hole 130. The top end of the lifting rope body 210 passes through the first through hole 130 and the lifting rope buckle 220 in sequence, and the lifting length of the lifting rope 20 is adjusted by the lifting rope buckle 220.

[0042] It should be noted that, in this embodiment, four suspension ropes 20 are taken as an example, and the number of the first through holes 130 is correspondingly four, which are evenly distributed on the two telescopic support rods 110 .

[0043] It should be noted that the hanging rope buckle 220 is an existing common drawstring buckle structure, which will not be described in detail here.

[0044] As an example, the top ends of the plurality of spokes 320 are each provided with a second through hole 321 , and the closed portion 331 of the flexible band 330 is movably disposed in the second through hole 321 .

[0045] As an example, the flexible belt 330 includes a flexible belt body 3301 and a buckle 3302 , both ends of the flexible belt body 3301 pass through the buckle 3302 to form a closed portion 331 , and the length of the closed portion 331 is adjusted by the buckle 3302 .

[0046] It should be noted that the buckle 3302 is an existing common drawstring buckle structure, which will not be described in detail here.

[0047] As an example, the shape of the bottom frame 310 is a circle or an equilateral polygon.

[0048] It should be noted that, in this embodiment, the shape of the bottom frame 310 is a circle as an example.

[0049] As an example, the adjustable thermal insulation sleeve 40 includes an adjustable thermal insulation sleeve body 410, a drawstring 420 and a drawstring buckle 430. A drawstring channel 411 is circumferentially arranged at the opening 401 of the adjustable thermal insulation sleeve body 410. The drawstring 420 is inserted into the drawstring channel 411 and the length of the drawstring 420 is greater than the length of the drawstring channel 411. Both ends of the drawstring 420 pass through the drawstring buckle 430, and the size of the opening 401 is adjusted by the drawstring buckle 430.

[0050] It should be noted that the drawstring buckle 430 is an existing common drawstring buckle structure, which will not be described in detail here.

[0051] As an example, the bottom of the adjustable insulation cover 40 is fixedly connected to the bottom frame 310, so that during the installation or disassembly of this embodiment, when the opening 401 of the adjustable insulation cover 40 is in an open state, the adjustable insulation cover 40 will not fall off, further ensuring the ease of installation or disassembly of this embodiment.

[0052] Instructions for use of this embodiment:

[0053] 1. Installation: First, place the adjustable skeleton 30 and the adjustable insulation sleeve 40 in a disassembled state into the well through the wellhead 70, and at the same time adjust the lifting length of the lifting rope 20 so that the top of the adjustable skeleton 30 is lower than the lower surface of the well cover seat 60, and then adjust the support frame 10 to the corresponding size according to the inner cavity size of the well cover seat 60, so that the lateral part 121 of the inverted L-shaped buckle 120 at both ends of the telescopic support rod 110 is movably connected to the step 610 of the well cover seat 60, and adjust the height of the support frame 340 in the space surrounded by the plurality of spokes 320 according to the specifications of the wellhead 70 or specific needs, so that the closed part 331 of the flexible belt 330 forms a shape larger than the wellhead 70 or a specific size shape, and fix the closed part of the flexible belt 330 with the buckle 3302 After the shape of 331 is formed, the bottom end of the fixing rope 350 whose upper end is connected to the supporting frame 340 is pulled downward to make the supporting frame 340 closely abut against the plurality of spokes 320, and then the bottom end of the fixing rope 350 is fixed on the bottom frame 310, and the adjustment of the adjustable skeleton 30 is completed; then the adjustable insulation cover 40 is sleeved on the outside of the adjustable skeleton 30 and the opening 401 is tightened to make the top of the adjustable insulation cover 40 buckle inwardly toward the inside of the closed part 331 of the flexible belt 330 until the shape of the adjustable insulation cover 40 matches the adjustable skeleton 30, and finally the hoisting length of the lifting rope 20 is reduced, so that the top end of the adjustable insulation cover 40 supported by the adjustable skeleton 30 is closely abutted against the lower surface of the manhole cover seat 60, thereby forming a tight insulation cover structure at the wellhead 70;

[0054] 2. When disassembling: first adjust the lifting length of the lifting rope 20 (increase the lifting length) so that the top of the adjustable insulation cover 40 supported by the adjustable skeleton 30 is separated from the lower surface of the manhole cover seat 60, then open the opening 401 of the adjustable insulation cover 40 to expose the adjustable skeleton 30, remove the bottom end of the fixing rope 350 from the bottom frame 310, and move the support frame 340 upward until the shape of the closed part 331 of the flexible belt 330 is smaller than the shape of the wellhead 70, then tighten the opening 401 of the adjustable insulation cover 40 again (or take it out directly without tightening), and finally, the support frame 10 together with the adjustable skeleton 30 wrapped by the adjustable insulation cover 40 can be taken out of the wellhead 70.

[0055] This embodiment has a simple structure and is easy to use. It can be completed by one worker at the wellhead 70 by inserting the upper body into the wellhead 70 without going down the well. It saves time and effort and is highly safe, and has great practical significance.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wellhead insulation device, characterized in that: It includes a support frame, a sling, an adjustable frame and an adjustable thermal insulation cover; The support frame is horizontally installed in the inner cavity of the manhole cover seat below the manhole cover, and the support frame includes at least one retractable support rod; The adjustable skeleton is provided in the well below the well cover seat, and the adjustable skeleton is a collapsed body structure, which includes a horizontally arranged bottom frame, a plurality of spokes, a flexible belt, a support frame and at least three fixing ropes, wherein the shape of the bottom frame is smaller than the shape of the wellhead, a plurality of spokes are evenly distributed along the bottom frame and the bottom ends of a plurality of spokes are hinged to the bottom frame, the top ends of a plurality of spokes are movably connected to the closed part formed by the flexible belt, the length of the closed part is adjustable and the closed part can form a shape larger than the wellhead, the support frame is horizontally movably arranged in a space surrounded by a plurality of spokes, the shape of the support frame is a shape that is proportionally enlarged relative to the shape of the bottom frame and the shape of the support frame is smaller than the shape of the wellhead, at least three fixing ropes are evenly distributed along the support frame and the two ends of each fixing rope are movably connected to the bottom frame and the support frame respectively, and the length of the part of the fixing rope located between the bottom frame and the support frame is adjustable; The support frame is connected to the adjustable frame through the suspension rope, the suspension length of the suspension rope is adjustable and the suspension rope includes at least three ropes, the top ends of at least three suspension ropes are evenly installed on the support frame, and the bottom ends are evenly fixedly connected to the bottom frame so that the adjustable frame is coaxial with the manhole cover seat; The adjustable thermal insulation sleeve is arranged outside the adjustable frame, and when the opening at the top of the adjustable thermal insulation sleeve is opened, the shape of the opening is larger than the shape of the closed portion of the flexible belt; when the opening is tightened, the top of the adjustable thermal insulation sleeve can be driven to buckle inwardly toward the closed portion of the flexible belt to form a structure in which the shape of the opening is smaller than the shape of the closed portion of the flexible belt; An inverted L-shaped buckle extending outward is provided above both ends of the telescopic support rod, the lateral part of the inverted L-shaped buckle is movably connected to the step of the manhole cover seat on which the manhole cover is placed, and the bottom end of the vertical part of the inverted L-shaped buckle is fixedly connected to the telescopic support rod; The adjustable thermal insulation sleeve comprises an adjustable thermal insulation sleeve body, a drawstring and a drawstring buckle. A drawstring channel is circumferentially arranged at the opening of the adjustable thermal insulation sleeve body. The drawstring is inserted into the drawstring channel and the length of the drawstring is greater than the length of the drawstring channel. Both ends of the drawstring pass through the drawstring buckle, and the size of the opening is adjusted by the drawstring buckle.

2. A wellhead insulation device according to claim 1, characterized in that: The support frame includes at least two retractable support rods, and at least two retractable support rods are stacked up and down and cross-arranged or integrally formed and cross-arranged.

3. A wellhead insulation device according to claim 2, characterized in that: The support frame includes two retractable support rods, which are overlapped and cross-arranged up and down, and the vertical part of the inverted L-shaped buckle is a retractable structure. The length difference between the vertical parts of the inverted L-shaped buckle of the two retractable support rods is greater than the thickness of the retractable support rod.

4. A wellhead insulation device according to claim 1, characterized in that: The lifting rope includes a lifting rope body and a lifting rope buckle. The support frame is provided with a first through hole corresponding to the lifting rope one by one. The lifting rope buckle is arranged at the first through hole. The top end of the lifting rope body passes through the first through hole and the lifting rope buckle in sequence, and the lifting length of the lifting rope is adjusted by the lifting rope buckle.

5. A wellhead insulation device according to claim 1, characterized in that: A second through hole is formed at the top of a plurality of the spokes, and the closed portion of the flexible belt is movably inserted into the second through hole.

6. A wellhead insulation device according to claim 1, characterized in that: The flexible belt includes a flexible belt body and a buckle, both ends of the flexible belt body pass through the buckle to form the closed portion, and the length of the closed portion is adjusted by the buckle.

7. A wellhead insulation device according to claim 1, characterized in that: The bottom frame is in the shape of a circle or an equilateral polygon.

8. A wellhead insulation device according to claim 1, characterized in that: The bottom of the adjustable thermal insulation cover is fixedly connected to the bottom frame.

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