Thermal recovery pipeline connecting device

Abstract

The utility model discloses a thermal recovery pipeline connecting device, which relates to the technical field of oil field steam injection and comprises a communicating pipe, a first connecting pipe, a second connecting pipe, a first elastic ring, a second elastic ring, a first elastic hoop and a second elastic hoop. The first end of the first connecting pipe is used for being fixedly connected and communicated with one end of the air inlet main pipe, and the first elastic hoop can clamp the second end of the first connecting pipe, the first elastic ring and the first end of the communicating pipe; the first end of the second connecting pipe is used for being fixedly connected and communicated with one end of the main exhaust pipe, and the second elastic hoop can clamp the second end of the second connecting pipe, the second elastic ring and the second end of the communicating pipe; a series of problems caused by length expansion and contraction due to temperature change of the pipeline can be eliminated, and the service life of the thermal recovery pipeline is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of oil field steam injection, in particular to a thermal recovery pipeline connecting device. Background Art

[0002] At the steam injection site in the oil field, the high-temperature and high-pressure thermal recovery pipeline has the following problems:

[0003] During steam injection, high-temperature and high-pressure steam is transported in the pipeline, the pipeline is heated, and the length is extended; when the steam injection is stopped, the temperature and pressure of the pipeline decrease, and the length is shortened. The whole process will produce axial tightening force or shrinkage stress. To solve this problem, traditional sites usually add U-shaped pipe sections to the pipeline to compensate for the length changes caused by thermal expansion and contraction of the pipeline. However, in the mobile steam injection boiler process, in order to reduce heat loss, the total length of the pipeline from the boiler to the wellhead is short. If a U-shaped pipe section is added, the cost will increase significantly, and the efficiency of the overall equipment movement operation will also be reduced. Utility Model Content

[0004] The utility model aims to provide a thermal production pipeline connection device to solve the problems existing in the above-mentioned prior art, eliminate a series of problems caused by the length expansion and contraction caused by the temperature change of the pipeline, and extend the service life of the thermal production pipeline.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a thermal extraction pipeline connection device, comprising a connecting pipe, a first connecting pipe, a second connecting pipe, a first elastic ring, a second elastic ring, a first elastic clamp and a second elastic clamp;

[0007] The first end of the first connecting pipe is used to be fixedly connected to and communicated with one end of the air intake main pipe, the first elastic ring is placed between the second end of the first connecting pipe and the first end of the communicating pipe, the first elastic clamp can clamp the second end of the first connecting pipe, the first elastic ring and the first end of the communicating pipe, and make the first elastic ring sealed and connected to and communicated with the second end of the first connecting pipe and the first end of the communicating pipe respectively;

[0008] The first end of the second connecting pipe is used to be fixedly connected to and communicated with one end of the exhaust main pipe, the second elastic ring is placed between the second end of the second connecting pipe and the second end of the communicating pipe, the second elastic clamp can clamp the second end of the second connecting pipe, the second elastic ring and the second end of the communicating pipe, and make the second elastic ring sealed and connected to and communicated with the second end of the second connecting pipe and the second end of the communicating pipe respectively.

[0009] Preferably, the first connecting pipe includes a first short section and a first clamp head, one end of the first short section is fixedly connected and communicated with one end of the first clamp head, the other end of the first short section is the first end of the first connecting pipe, and the other end of the first clamp head is the second end of the first connecting pipe; the second connecting pipe includes a second short section and a second clamp head, one end of the second short section is fixedly connected and communicated with one end of the second clamp head, the other end of the second short section is the first end of the second connecting pipe, and the other end of the second clamp head is the second end of the second connecting pipe.

[0010] Preferably, the connecting pipe includes a third short section, a third clamp head and a fourth clamp head, and the third clamp head, the third short section and the fourth clamp head are fixedly connected and connected in sequence, and the end of the third clamp head away from the third short section is the first end of the connecting pipe, and the end of the fourth clamp head away from the third short section is the second end of the connecting pipe.

[0011] Preferably, a first clamping groove is provided on the inner side of the first elastic clamp, and two side surfaces of the first clamping groove are respectively a first side surface and a second side surface, and an end of the first clamping head away from the first short section has a first clamping protrusion, and the first clamping protrusion has a first clamping surface and a first sealing surface, and the first clamping surface is used to contact and press with the first side surface, and an end of the third clamping head away from the third short section has a second clamping protrusion, and the second clamping protrusion has a second clamping surface and a second sealing surface, and the second clamping surface is used to contact and press with the second side surface, and the outer wall of the first elastic ring protrudes radially outward, and the outer wall of the first elastic ring is used to contact and press with the first sealing surface and the second sealing surface.

[0012] Preferably, a second clamping groove is provided on the inner side of the second elastic clamp, and two side surfaces of the second clamping groove are respectively a third side surface and a fourth side surface, and the end of the second clamp head away from the second short section has a third clamping protrusion, and the third clamping protrusion has a third clamping surface and a third sealing surface, and the third clamping surface is used to contact and press with the third side surface, and the end of the fourth clamp head away from the third short section has a fourth clamping protrusion, and the fourth clamping protrusion has a fourth clamping surface and a fourth sealing surface, and the fourth clamping surface is used to contact and press with the fourth side surface, and the outer side wall of the second elastic ring protrudes radially outward, and the outer side wall of the second elastic ring is used to contact and press with the third sealing surface and the fourth sealing surface.

[0013] Preferably, the first short section has the same structure as the second short section; the first clamp head, the second clamp head, the third clamp head and the fourth clamp head have the same structure; and the first elastic clamp has the same structure as the second elastic clamp.

[0014] Preferably, it also includes a fifth clamp head and a sixth clamp head, the structure of the fifth clamp head is the same as that of the third clamp head, a first blind plate is fixedly provided inside the fifth clamp head, and the first blind plate can seal the fifth clamp head, the structure of the sixth clamp head is the same as that of the fourth clamp head, a second blind plate is fixedly provided inside the sixth clamp head, and the second blind plate can seal the sixth clamp head.

[0015] Preferably, the first end of the first connecting pipe is used for welding to one end of the intake main pipe, the first end of the second connecting pipe is used for welding to one end of the exhaust main pipe, and the third clamp head, the third short section and the fourth clamp head are welded in sequence.

[0016] Preferably, it also includes an insulation layer and a protective shell, the insulation layer is used to be fixedly wrapped on the structure formed by the connecting pipe, the first connecting pipe, the second connecting pipe, the first elastic ring, the second elastic ring, the first elastic clamp and the second elastic clamp, and the protective shell is fixedly sleeved on the outer wall of the insulation layer.

[0017] Preferably, the thermal insulation layer comprises an aerogel layer, an aluminum silicate layer and a thermal insulation blanket layer which are sequentially arranged from the inside to the outside.

[0018] Compared with the prior art, the utility model has achieved the following technical effects:

[0019] The thermal extraction pipeline connection device provided by the utility model can effectively eliminate a series of problems caused by the length expansion and contraction caused by the temperature change of the pipeline by arranging the first elastic ring, the second elastic ring, the first elastic clamp and the second elastic clamp, and prolong the service life of the thermal extraction pipeline. Specifically, when the thermal extraction pipeline connection device provided by the utility model is installed on the thermal extraction pipeline, it is necessary to lock the first elastic clamp and the second elastic clamp, so that when the thermal extraction pipeline is heated and elongated, the first elastic ring and the second elastic ring are squeezed and compressed and deformed to compensate for the length change caused by the thermal expansion of the pipeline, and the first elastic clamp and the second elastic clamp can be squeezed and expanded and deformed to adapt to the structural change of the connection between the first elastic clamp and the second elastic clamp; when the thermal extraction pipeline is cooled and shortened, the extrusion force on the first elastic ring and the second elastic ring is reduced and expanded to compensate for the length change caused by the cold shrinkage of the pipeline and ensure sealing, and the first elastic clamp and the second elastic clamp can retract to adapt to the structural change of the connection between the first elastic clamp and the second elastic clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the thermal recovery pipeline connection device provided by the utility model when used for gas injection;

[0022] Figure 2 A schematic diagram of the thermal recovery pipeline connection device provided by the utility model when the gas injection is stopped;

[0023] In the figure: 1-connecting pipe, 2-third short section, 3-third clamp head, 4-second clamping surface, 5-second sealing surface, 6-fourth clamp head, 7-fourth clamping surface, 8-fourth sealing surface, 9-first connecting pipe, 10-first short section, 11-first clamp head, 12-first clamping surface, 13-first sealing surface, 14-second connecting pipe, 15-second short section, 16-second clamp head, 17-third clamping surface, 18-third sealing surface, 19-first elastic ring, 20-second elastic ring, 21-first elastic clamp, 22-first clamping groove, 23-second elastic clamp, 24-second clamping groove, 25-fifth clamp head, 26-first blind plate, 27-sixth clamp head, 28-second blind plate, 29-protective shell, 30-aerogel layer, 31-aluminum silicate layer, 32-insulation quilt layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model aims to provide a thermal production pipeline connection device to solve the problems existing in the above-mentioned prior art, eliminate a series of problems caused by the length expansion and contraction caused by the temperature change of the pipeline, and extend the service life of the thermal production pipeline.

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] like Figure 1-2As shown, the utility model provides a thermal production pipeline connection device, including a connecting pipe 1, a first connecting pipe 9, a second connecting pipe 14, a first elastic ring 19, a second elastic ring 20, a first elastic clamp 21 and a second elastic clamp 23; the first end of the first connecting pipe 9 is used to be fixedly connected and communicated with one end of the intake main pipe, the first elastic ring 19 is placed between the second end of the first connecting pipe 9 and the first end of the connecting pipe 1, the first elastic clamp 21 can clamp the second end of the first connecting pipe 9, the first elastic ring 19 and the first end of the connecting pipe 1, and make the first elastic ring 19 respectively sealed and connected with the second end of the first connecting pipe 9 and the first end of the connecting pipe 1 and communicate; the first end of the second connecting pipe 14 is used to be fixedly connected and communicated with one end of the exhaust main pipe, the second elastic ring 20 is placed between the second end of the second connecting pipe 14 and the second end of the connecting pipe 1, the second elastic clamp 23 can clamp the second end of the second connecting pipe 14, the second elastic ring 20 and the second end of the connecting pipe 1, and make the second elastic ring 20 respectively sealed and connected with the second end of the second connecting pipe 14 and the second end of the connecting pipe 1 and communicate.

[0028] The thermal extraction pipeline connection device provided by the utility model can effectively eliminate a series of problems caused by the length expansion and contraction caused by the temperature change of the pipeline by arranging the first elastic ring 19, the second elastic ring 20, the first elastic clamp 21 and the second elastic clamp 23, thereby extending the service life of the thermal extraction pipeline. Specifically, when the thermal extraction pipeline connection device provided by the utility model is installed on the thermal extraction pipeline, it is necessary to lock the first elastic clamp 21 and the second elastic clamp 23, so that when the thermal extraction pipeline is heated and elongated, the first elastic ring 19 and the second elastic ring 20 are squeezed and compressed and deformed to compensate for the length change caused by the thermal expansion of the pipeline. At the same time, the first elastic clamp 21 and the second elastic clamp 23 can be squeezed and expanded and deformed to adapt to the connection of the first elastic clamp 21 and the second elastic clamp 23. The structural changes of the joint; when the thermal production pipeline is shortened by cooling, the extrusion force on the first elastic ring 19 and the second elastic ring 20 is reduced and expands to compensate for the length change caused by the shrinkage of the pipeline and ensure sealing. At the same time, the first elastic clamp 21 and the second elastic clamp 23 can retract to adapt to the structural changes of the connection between the first elastic clamp 21 and the second elastic clamp 23; it should be noted here that the air intake pipe refers to the pipe part on the thermal production pipeline where the steam enters the thermal production pipeline connection device provided by the utility model, and the exhaust pipe refers to the pipe part on the thermal production pipeline where the steam returns from the thermal production pipeline connection device provided by the utility model; the first elastic clamp 21 and the second elastic clamp 23 both include clamp skins, which are locked by bolts and nuts.

[0029] Furthermore, the first connecting tube 9 includes a first short section 10 and a first clamp head 11, one end of the first short section 10 is fixedly connected and communicated with one end of the first clamp head 11, the other end of the first short section 10 is the first end of the first connecting tube 9, and the other end of the first clamp head 11 is the second end of the first connecting tube 9; the second connecting tube 14 includes a second short section 15 and a second clamp head 16, one end of the second short section 15 is fixedly connected and communicated with one end of the second clamp head 16, the other end of the second short section 15 is the first end of the second connecting tube 14, and the other end of the second clamp head 16 is the second end of the second connecting tube 14. The structure is simple and easy to manufacture and use.

[0030] Furthermore, the connecting pipe 1 includes a third short section 2, a third clamp head 3 and a fourth clamp head 6. The third clamp head 3, the third short section 2 and the fourth clamp head 6 are fixedly connected and connected in sequence. The end of the third clamp head 3 away from the third short section 2 is the first end of the connecting pipe 1, and the end of the fourth clamp head 6 away from the third short section 2 is the second end of the connecting pipe 1. The structure is simple and easy to manufacture and use.

[0031] Furthermore, a first clamping groove 22 is provided on the inner side of the first elastic clamp 21, and two side surfaces of the first clamping groove 22 are respectively a first side surface and a second side surface. The end of the first clamp head 11 away from the first short section 10 has a first clamping protrusion, and the first clamping protrusion has a first clamping surface 12 and a first sealing surface 13. The first clamping surface 12 is used to contact and press with the first side surface. The end of the third clamp head 3 away from the third short section 2 has a second clamping protrusion, and the second clamping protrusion has a second clamping surface 4 and a second sealing surface 5. The second clamping surface 4 It is used to contact and press with the second side surface. The outer side wall of the first elastic ring 19 protrudes radially outward. The outer side wall of the first elastic ring 19 is used to contact and press with the first sealing surface 13 and the second sealing surface 5 to realize the line sealing hard connection. The structure is simple and the sealing performance is improved. The first clamping surface 12 can slide with the first side surface, the second clamping surface 4 can slide with the second side surface, and the outer side wall of the first elastic ring 19 can slide with the first sealing surface 13 and the second sealing surface 5, which is convenient for adaptive movement when the length of the thermal production pipeline changes and ensures effective sealing.

[0032] Furthermore, a second clamping groove 24 is provided on the inner side of the second elastic clamp 23, and two side surfaces of the second clamping groove 24 are respectively a third side surface and a fourth side surface, and an end of the second clamp head 16 away from the second short section 15 has a third clamping protrusion, and the third clamping protrusion has a third clamping surface 17 and a third sealing surface 18, and the third clamping surface 17 is used to contact and press with the third side surface, and an end of the fourth clamp head 6 away from the third short section 2 has a fourth clamping protrusion, and the fourth clamping protrusion has a fourth clamping surface 7 and a fourth sealing surface 8, and the fourth clamping surface 7 It is used to contact and press with the fourth side surface, the outer side wall of the second elastic ring 20 protrudes radially outward, and the outer side wall of the second elastic ring 20 is used to contact and press with the third sealing surface 18 and the fourth sealing surface 8 to realize the line sealing hard connection, with a simple structure and improved sealing performance. The third clamping surface 17 can slide with the third side surface, the fourth clamping surface 7 can slide with the fourth side surface, and the outer side wall of the second elastic ring 20 can slide with the third sealing surface 18 and the fourth sealing surface 8, which is convenient for adaptive movement when the length of the thermal production pipeline changes and ensures effective sealing.

[0033] Furthermore, the first short section 10 has the same structure as the second short section 15; the first clamp head 11, the second clamp head 16, the third clamp head 3 and the fourth clamp head 6 have the same structure; the first elastic clamp 21 has the same structure as the second elastic clamp 23, which is easy to manufacture and use.

[0034] Furthermore, the thermal recovery pipeline connection device provided by the utility model further includes a fifth clamp head 25 and a sixth clamp head 27. The structure of the fifth clamp head 25 is the same as that of the third clamp head 3. A first blind plate 26 is fixedly disposed inside the fifth clamp head 25. The first blind plate 26 can block the fifth clamp head 25. The structure of the sixth clamp head 27 is the same as that of the fourth clamp head 6. A second blind plate 28 is fixedly disposed inside the sixth clamp head 27. The second blind plate 28 can block the sixth clamp head 27. The conventional steam injection process often uses valve control The disconnection state in the pipeline, and after the valve is worn and leaking, it will be not tightly closed and the reliability is poor. When discharging the accumulated water in the pipeline, it is not easy to drain the accumulated water due to the complex internal structure of the valve, and freezing and blockage problems are easy to occur. The thermal production pipeline connecting device provided by the utility model can remove the connecting pipe 1 and install the fifth clamp head 25 and the sixth clamp head 27 on the thermal production pipeline when stopping injection to seal the thermal production pipeline, so as to achieve reliable disconnection of the pipeline on the basis of ensuring operating efficiency, improve reliability, and reduce hidden dangers such as freezing and leakage.

[0035] As a more preferred implementation of this embodiment, the first end of the first connecting pipe 9 is used for welding to one end of the intake pipe, the first end of the second connecting pipe 14 is used for welding to one end of the exhaust pipe, and the third clamp head 3, the third short section 2 and the fourth clamp head 6 are welded in sequence for easy manufacturing.

[0036] Furthermore, the thermal production pipeline connection device provided by the utility model also includes an insulation layer and a protective shell 29. The insulation layer is used to be fixedly wrapped on the structure formed by connecting the connecting pipe 1, the first connecting pipe 9, the second connecting pipe 14, the first elastic ring 19, the second elastic ring 20, the first elastic clamp 21 and the second elastic clamp 23. The protective shell 29 is fixedly sleeved on the outer wall of the insulation layer, and the insulation layer plays a good insulation role. The protective shell 29 is used to effectively protect the structure inside the protective shell 29.

[0037] As a more preferred implementation of this embodiment, the thermal insulation layer includes an aerogel layer 30, an aluminum silicate layer 31 and a thermal insulation blanket layer 32 arranged in sequence from the inside to the outside, and has good thermal insulation performance.

[0038] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A thermal recovery pipeline connection device, characterized in that: It includes a connecting pipe, a first connecting pipe, a second connecting pipe, a first elastic ring, a second elastic ring, a first elastic clamp and a second elastic clamp; The first end of the first connecting pipe is used to be fixedly connected to and communicated with one end of the air intake main pipe, the first elastic ring is placed between the second end of the first connecting pipe and the first end of the communicating pipe, the first elastic clamp can clamp the second end of the first connecting pipe, the first elastic ring and the first end of the communicating pipe, and make the first elastic ring sealed and connected to and communicated with the second end of the first connecting pipe and the first end of the communicating pipe respectively; The first end of the second connecting pipe is used to be fixedly connected to and communicated with one end of the exhaust main pipe, the second elastic ring is placed between the second end of the second connecting pipe and the second end of the communicating pipe, the second elastic clamp can clamp the second end of the second connecting pipe, the second elastic ring and the second end of the communicating pipe, and make the second elastic ring sealed and connected to and communicated with the second end of the second connecting pipe and the second end of the communicating pipe respectively.

2. The thermal recovery pipeline connection device according to claim 1, characterized in that: The first connecting pipe includes a first short section and a first clamp head, one end of the first short section is fixedly connected and communicated with one end of the first clamp head, the other end of the first short section is the first end of the first connecting pipe, and the other end of the first clamp head is the second end of the first connecting pipe; the second connecting pipe includes a second short section and a second clamp head, one end of the second short section is fixedly connected and communicated with one end of the second clamp head, the other end of the second short section is the first end of the second connecting pipe, and the other end of the second clamp head is the second end of the second connecting pipe.

3. The thermal recovery pipeline connection device according to claim 2, characterized in that: The connecting pipe includes a third short section, a third clamp head and a fourth clamp head, which are fixedly connected and connected in sequence. An end of the third clamp head away from the third short section is the first end of the connecting pipe, and an end of the fourth clamp head away from the third short section is the second end of the connecting pipe.

4. The thermal recovery pipeline connection device according to claim 3, characterized in that: A first clamping groove is provided on the inner side of the first elastic clamp, and two side surfaces of the first clamping groove are respectively a first side surface and a second side surface. The end of the first clamp head away from the first short section has a first clamping protrusion, and the first clamping protrusion has a first clamping surface and a first sealing surface, and the first clamping surface is used to contact and press with the first side surface. The end of the third clamp head away from the third short section has a second clamping protrusion, and the second clamping protrusion has a second clamping surface and a second sealing surface, and the second clamping surface is used to contact and press with the second side surface. The outer wall of the first elastic ring protrudes radially outward, and the outer wall of the first elastic ring is used to contact and press with the first sealing surface and the second sealing surface.

5. The thermal recovery pipeline connection device according to claim 4, characterized in that: A second clamping groove is provided on the inner side of the second elastic clamp, and two side surfaces of the second clamping groove are respectively a third side surface and a fourth side surface. The end of the second clamp head away from the second short section has a third clamping protrusion, and the third clamping protrusion has a third clamping surface and a third sealing surface, and the third clamping surface is used to contact and press with the third side surface. The end of the fourth clamp head away from the third short section has a fourth clamping protrusion, and the fourth clamping protrusion has a fourth clamping surface and a fourth sealing surface, and the fourth clamping surface is used to contact and press with the fourth side surface. The outer wall of the second elastic ring protrudes radially outward, and the outer wall of the second elastic ring is used to contact and press with the third sealing surface and the fourth sealing surface.

6. The thermal recovery pipeline connection device according to claim 3, characterized in that: The first short section has the same structure as the second short section; the first clamp head, the second clamp head, the third clamp head and the fourth clamp head have the same structure; the first elastic clamp has the same structure as the second elastic clamp.

7. The thermal recovery pipeline connection device according to claim 3, characterized in that: It also includes a fifth clamp head and a sixth clamp head, the structure of the fifth clamp head is the same as that of the third clamp head, a first blind plate is fixedly provided inside the fifth clamp head, and the first blind plate can seal the fifth clamp head, the structure of the sixth clamp head is the same as that of the fourth clamp head, a second blind plate is fixedly provided inside the sixth clamp head, and the second blind plate can seal the sixth clamp head.

8. The thermal recovery pipeline connection device according to claim 3, characterized in that: The first end of the first connecting pipe is used for welding to one end of the intake main pipe, the first end of the second connecting pipe is used for welding to one end of the exhaust main pipe, and the third clamp head, the third short section and the fourth clamp head are welded in sequence.

9. The thermal recovery pipeline connection device according to claim 1, characterized in that: It also includes a thermal insulation layer and a protective shell, the thermal insulation layer is used to be fixedly wrapped on the structure formed by the connecting pipe, the first connecting pipe, the second connecting pipe, the first elastic ring, the second elastic ring, the first elastic clamp and the second elastic clamp, and the protective shell is fixedly sleeved on the outer wall of the thermal insulation layer.

10. The thermal recovery pipeline connection device according to claim 9, characterized in that: The thermal insulation layer comprises an aerogel layer, an aluminum silicate layer and a thermal insulation blanket layer which are sequentially arranged from the inside to the outside.

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