Pipeline anti-freezing device

Abstract

The utility model relates to the technical field of outdoor oil well pipelines, in particular to a pipeline anti-freezing device. The pipeline anti-freezing device comprises a hoop, the hoop is fixedly arranged on a pipe body of a pipeline in a sleeving mode through bolts by means of folded semicircular pipes, and a vertical plate is fixedly installed on one side of one semicircular pipe; the number of the extension rods is four, the four extension rods are symmetrically installed at the two ends of the clamping hoop in pairs, two sets of pipe covering assemblies are installed on the four extension rods, the two sets of pipe covering assemblies are oppositely arranged on the pipe body in a sleeving mode, each pipe covering assembly comprises a soft armor, and transverse insertion rods matched with the extension rods in an inserted mode are installed on the two sides of the soft armor. A heat preservation film is attached to the outer side of the soft armor, a silica gel cushion layer is installed on the inner side of the soft armor, and an electric heating piece and a liquid guide piece are installed on the silica gel cushion layer. And the heat preservation box body is installed on the vertical plate, and a storage battery, a controller and a circulating pump are embedded in the heat preservation box body. The pipeline anti-freezing device has the advantages of wrapping installation deformation and being good in heat preservation performance.

Description

Technical Field

[0001] This utility model relates to the field of outdoor oil well pipeline technology, and in particular to a pipeline antifreeze device. Background Technology

[0002] Oil wellhead pipelines, often simply referred to as production pipelines, are the sections of pipeline that start at the wellhead and connect to the nearest metering station, gathering station, or production separator. Their core function is to safely transport the multiphase fluid extracted from the wellhead—comprising crude oil, natural gas, water, and other impurities—from its source to the next stage of processing.

[0003] The oil pipeline starts from the wellhead. Since the oil wells are located outdoors, in cold regions or areas with large temperature differences, it is necessary to insulate and prevent freezing of the oil pipeline in order to ensure smooth oil transportation. The oil pipeline uses insulation and heat tracing (such as electric heat tracing or hot water heat tracing) to prevent crude oil from condensing and blocking the pipeline. When performing insulation and heat tracing, the existing equipment does not wrap the pipeline completely, resulting in poor insulation effect, causing additional energy loss, and the overall wrapping installation is relatively cumbersome.

[0004] Therefore, it is necessary to provide a new pipeline antifreeze device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a pipeline antifreeze device.

[0006] The pipeline antifreeze device provided by this utility model includes: a clamp, wherein the clamp is made of mating semi-circular tubes and fixedly sleeved on the pipe body of the pipeline by bolts, and a vertical plate is fixedly installed on one side of one of the semi-circular tubes;

[0007] The device includes four extension rods, which are symmetrically installed in pairs at both ends of the clamp. Two sets of pipe covering assemblies are installed on the four extension rods. The two sets of pipe covering assemblies are fitted together on the pipe body. Each pipe covering assembly includes a soft armor. Horizontal inserts that engage with the extension rods are installed on both sides of the soft armor. An insulation film is attached to the outer side of the soft armor, and a silicone pad is installed on the inner side of the soft armor. Heating elements and liquid guiding elements are installed on the silicone pad.

[0008] An insulated box is installed on the vertical plate, and a battery, a controller and a circulation pump are embedded in the insulated box. The battery and the circulation pump are both electrically connected to the controller.

[0009] A liquid storage cylinder is fixedly installed at the bottom of the insulation box, and the inlet end of the circulation pump is connected to the liquid storage cylinder through a conduit. A constant temperature electric heating rod is embedded in the liquid storage cylinder, and the constant temperature electric heating rod is electrically connected to the controller.

[0010] Preferably, the outer wall of the horizontal insertion rod is provided with a groove, the bottom end of the extension rod is provided with a vertical groove through which the horizontal insertion rod passes, and the two sides of the vertical groove are provided with protrusions that engage with the groove.

[0011] Preferably, a sealing end cap is detachably installed at the end of the extension rod by screws. The sealing end cap is composed of mating semi-circular cover plates, and heat insulation pads are attached to both ends of the sealing end cap.

[0012] Preferably, the width of the vertical groove is twice the thickness of the horizontal insertion rod.

[0013] Preferably, the heating element includes a heating wire and a patch thermocouple. The heating wire is continuously bent in an S-shape and attached to the inner side of the silicone pad layer. The heating wire is electrically connected to the controller. The patch thermocouple is attached to the inner side of the silicone pad layer and is electrically connected to the controller.

[0014] Preferably, the liquid guiding component includes a liquid guiding tube, and there are several liquid guiding tubes. The several liquid guiding tubes are evenly inserted into the silicone pad layer, and both ends of the several liquid guiding tubes are connected by liquid guiding rings. One liquid guiding ring is connected to the liquid outlet of the circulating pump through a conduit, and the other liquid guiding ring is connected to the liquid storage cylinder through a conduit.

[0015] Preferably, the liquid storage cylinder is fitted with an outer protective insulation cylinder, and a ceramic heat storage layer is filled between the outer protective insulation cylinder and the liquid storage cylinder.

[0016] Compared with related technologies, the pipeline antifreeze device provided by this utility model has the following beneficial effects:

[0017] 1. This utility model provides a pipeline antifreeze device. By setting an extension rod on the mating semi-circular pipe, and inserting the extension rod with the horizontal insertion rod of the pipe covering assembly through the opening of the vertical groove, the pipe covering assembly used for pipe insulation can be quickly connected and wrapped on the pipe body. After installation, it is fixed by the sealing end cap. The overall installation operation is convenient.

[0018] 2. The pipe covering assembly is equipped with electric heating elements and liquid guiding elements, and works in conjunction with the controller and circulating pump inside the insulation box to simultaneously heat and insulate the pipe body using electric heat tracing and water heat tracing, thereby improving the overall pipeline's antifreeze capability. Attached Figure Description

[0019] Figure 1 A schematic diagram of a preferred embodiment of the pipeline antifreeze device provided by this utility model;

[0020] Figure 2 Another structural schematic diagram of the pipeline antifreeze device provided by this utility model;

[0021] Figure 3A schematic diagram of the structure of the clamp with the pipe covering assembly provided by this utility model;

[0022] Figure 4 A cross-sectional structural schematic diagram of the pipe covering assembly provided by this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the insulated box body attached to the vertical plate according to this utility model.

[0024] Numbered in the diagram: 1. Clamp; 11. Semicircular tube; 2. Vertical plate; 3. Extension rod; 301. Vertical groove; 31. Protrusion; 4. Covering pipe assembly; 41. Soft armor; 42. Horizontal insertion rod; 43. Insulation film; 44. Silicone pad; 45. Heating element; 451. Heating wire; 452. Surface mount thermocouple; 46. Liquid guiding element; 461. Liquid guiding tube; 462. Liquid guiding ring; 401. Groove; 5. Insulation box; 51. Battery; 52. Controller; 53. Circulation pump; 6. Liquid storage tank; 61. Outer insulation cylinder; 62. Ceramic heat storage layer; 7. Constant temperature heating rod; 8. Sealing end cap; 81. Insulation pad. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] Please see Figures 1 to 4 This utility model provides a pipeline antifreeze device, which includes:

[0028] The clamp 1 is a bolt-fitted sleeve on the pipe body of the pipeline consisting of mating semi-circular tubes 11. A vertical plate 2 is fixedly installed on one side of one of the semi-circular tubes 11.

[0029] There are four extension rods 3, and the four extension rods 3 are symmetrically installed in pairs at both ends of the clamp 1. Two sets of pipe covering assemblies 4 are installed on the four extension rods 3. The two sets of pipe covering assemblies 4 are fitted together on the pipe body. The pipe covering assembly 4 includes a soft armor 41. The soft armor 41 has horizontal insertion rods 42 installed on both sides that are inserted into the extension rods 3. The soft armor 41 has a heat insulation film 43 attached to the outside and a silicone pad 44 installed on the inside. The silicone pad 44 has an electric heating element 45 and a liquid guiding element 46 installed on it.

[0030] The insulated box 5 is installed on the vertical plate 2, and the insulated box 5 is equipped with a battery 51, a controller 52 and a circulation pump 53. The battery 51 and the circulation pump 53 are both electrically connected to the controller 52.

[0031] The liquid storage cylinder 6 is fixedly installed at the bottom of the heat preservation box 5, and the liquid inlet end of the circulation pump 53 is connected to the liquid storage cylinder 6 through a conduit. The liquid storage cylinder 6 is embedded with a constant temperature electric heating rod 7, and the constant temperature electric heating rod 7 is electrically connected to the controller 52.

[0032] The horizontal insertion rod 42 has a groove 401 on its outer side wall, and the extension rod 3 has a vertical groove 301 at its bottom end through which the horizontal insertion rod 42 passes. The vertical groove 301 has protrusions 31 on both sides that engage with the groove 401. The end of the extension rod 3 is detachably fitted with a sealing end cap 8 by screws. The sealing end cap 8 is composed of mating semi-circular cover plates, and heat insulation pads 81 are attached to both ends of the sealing end cap 8. The width of the vertical groove 301 is twice the thickness of the horizontal insertion rod 42.

[0033] It should be noted that during installation, the mating semicircular tubes 11 are first assembled into clamps 1 using bolts and then fitted onto the oil pipeline. After assembly, the four extension rods 3 are fixed to both ends of the clamps 1 using bolts. Then, the two sets of pipe-covering assemblies 4 are inserted into the vertical slots 301 of the extension rods 3 using horizontal insertion rods 42. The protrusions 31 and grooves 401 are used to achieve quick insertion. After insertion, the mating semicircular cover plates are inserted into the vertical slots 301 to form sealing end caps 8, thus sealing both ends of the pipe-covering assembly 4. Then, the heating element 45 and the liquid guiding element 46 of the pipe-covering assembly 4 are connected to the controller 52 inside the insulation box 5. The circulating pump 53 is connected to inject the heat-conducting liquid into the storage tank 6. Alkylbenzene type heat-conducting oil can be used, which has a freezing point of -80℃ and can achieve antifreeze condensation. Then, when the tube body needs to be kept warm, the electric heating element 45 is controlled to heat and keep the tube body warm, and the constant temperature electric heating rod 7 is started to heat the heat-conducting liquid in the storage tank 6. Then the circulating pump 53 is started to circulate the heated heat-conducting liquid in the heat-conducting element 46, so as to realize the simultaneous electric heating and water heating to keep the tube body warm and prevent freezing. During the heating process, the tube covering assembly 4 can achieve heat preservation after heating by using the silicone pad layer 44 and the heat preservation film 43, thereby improving the overall antifreeze performance.

[0034] It should also be noted that the power of the entire device is provided by the storage battery 51. The storage battery 51 is connected to an external power source via a cable to supplement the power. Since the wellhead of the oil well is located outdoors, a wind-solar hybrid power generation system can be used for power generation and energy storage. In addition, when the controller 52 is connected to the discharge module of the wind-solar hybrid power generation system for charging redundancy, in order to protect the battery, the excess power is discharged and connected to the constant temperature electric heating rod 7 to heat the liquid storage tank 6, so that the heat-conducting liquid in the liquid storage tank 6 is kept within the ideal temperature range.

[0035] Furthermore, in order to maintain the temperature of the heat-conducting liquid in the liquid storage cylinder 6, an outer protective insulation cylinder 61 is fitted on the liquid storage cylinder 6, and a ceramic heat storage layer 62 is filled between the outer protective insulation cylinder 61 and the liquid storage cylinder 6 for heat storage and insulation of the liquid storage cylinder 6.

[0036] In the embodiments of this utility model, please refer to Figure 1 and Figure 4 The heating element 45 includes a heating wire 451 and a patch thermocouple 452. The heating wire 451 is continuously bent in an S-shape and attached to the inner side of the silicone pad layer 44. The heating wire 451 is electrically connected to the controller 52. The patch thermocouple 452 is attached to the inner side of the silicone pad layer 44 and is electrically connected to the controller 52.

[0037] It should be noted that when the heating element 45 is in use, when the patch thermocouple 452 detects that the surface temperature of the tube is lower than the set threshold, it sends a signal to the controller 52. The controller 52 controls the heating wire 451 to heat the inside of the tube. When the temperature exceeds the set threshold, the controller 52 controls the heating wire 451 to stop heating, thus completing the electric heating and heat preservation.

[0038] In the embodiments of this utility model, please refer to Figure 1 and Figure 4 The liquid guiding component 46 includes a liquid guiding tube 461, and a plurality of liquid guiding tubes 461 are provided. The plurality of liquid guiding tubes 461 are evenly inserted into the silicone pad layer 44, and both ends of the plurality of liquid guiding tubes 461 are connected by liquid guiding rings 462. One liquid guiding ring 462 is connected to the liquid outlet of the circulating pump 53 through a conduit, and the other liquid guiding ring 462 is connected to the liquid storage cylinder 6 through a conduit.

[0039] It should be noted that: the circulating pump 53 guides the heat transfer liquid from the storage tank 6 into several liquid guide pipes 461 through the liquid guide ring 462 at one end, and then guides it back into the storage tank 6 through the liquid guide ring 462 at the other end, realizing water-heat circulation, thereby achieving water-heat insulation of the pipeline body. All connecting pipes need to be wrapped with insulation sleeves to reduce the heat loss caused by the liquid transfer liquid during circulation.

[0040] The working principle of the pipeline antifreeze device provided by this utility model is as follows:

[0041] During installation, first, the mating semicircular tubes 11 are assembled into clamps 1 using bolts and fitted onto the oil pipeline. After assembly, the four extension rods 3 are fixed to both ends of the clamps 1 using bolts. Then, the two sets of pipe-covering assemblies 4 are inserted into the vertical slots 301 of the extension rods 3 using horizontal insertion rods 42. The protrusions 31 and grooves 401 are used to achieve quick insertion. After insertion, the mating semicircular cover plates are inserted into the vertical slots 301 to form sealing end caps 8 to seal both ends of the pipe-covering assembly 4. Then, the heating element 45 and the liquid guiding element 46 of the pipe-covering assembly 4 are connected to the controller 52 and the circulating pump 53 inside the insulation box 5. The heat-conducting liquid, which can be alkylbenzene type heat-conducting oil with a freezing point of -80℃, can be injected into the liquid storage tank 6 to achieve protection. The tube body freezes and solidifies. When the patch thermocouple 452 detects that the surface temperature of the tube body is lower than the set threshold, it sends a signal to the controller 52. The controller 52 controls the heating wire 451 to heat the inside of the tube body. When the temperature exceeds the set threshold, the controller 52 controls the heating wire 451 to stop heating, thus completing the electric heating and heat preservation. At the same time as the electric heating and heat preservation, the constant temperature heating rod 7 is started to heat the heat-conducting liquid in the liquid storage cylinder 6. Then, the circulation pump 53 is started to circulate the heated liquid in the liquid-conducting component 46, so as to realize the simultaneous electric heating and water heating and heat preservation of the tube body. During the heating process, the tube covering assembly 4 can achieve heat preservation after heating by using the silicone pad 44 and the heat preservation film 43, thereby improving the overall antifreeze performance.

[0042] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pipeline anti-freezing device, comprising: a clamp (1) which is sleeved on the pipe body of a pipeline by bolt fastening, the clamp (1) being composed of two half-round pipes (11), one side of one half-round pipe (11) being fixedly provided with a vertical plate (2); characterized in that it further comprises: four extension rods (3) which are symmetrically installed at two ends of the clamp (1) in two groups respectively, two groups of pipe covering assemblies (4) being installed on the four extension rods (3), the two groups of pipe covering assemblies (4) being sleeved on the pipe body in a matched manner, the pipe covering assembly (4) comprising a soft armor (41), both sides of the soft armor (41) being provided with cross-inserted rods (42) which are insertedly connected with the extension rods (3), the outer side of the soft armor (41) being attached with a heat preservation film (43), the inner side of the soft armor (41) being provided with a silica gel pad layer (44), the silica gel pad layer (44) being provided with an electric heating element (45) and a liquid guiding element (46); a heat preservation box body (5) which is installed on the vertical plate (2), the heat preservation box body (5) being embedded with a storage battery (51), a controller (52) and a circulating pump (53), the storage battery (51) and the circulating pump (53) being electrically connected with the controller (52); a liquid storage cylinder (6) which is fixedly installed at the bottom end of the heat preservation box body (5), the liquid inlet end of the circulating pump (53) being communicated with the liquid storage cylinder (6) through a pipeline, the liquid storage cylinder (6) being embedded with a constant temperature electric heating rod (7), the constant temperature electric heating rod (7) being electrically connected with the controller (52).

2. The freeze protection apparatus for a pipeline of claim 1, wherein, The outer side wall of the cross-inserted rod (42) is provided with a groove (401), the bottom end of the extension rod (3) is provided with a vertical slot (301) through which the cross-inserted rod (42) passes, both sides of the vertical slot (301) being provided with protrusions (31) which are insertedly connected with the groove (401).

3. The freeze-proof apparatus for a pipeline according to claim 2, wherein The end of the extension rod (3) is detachably provided with a sealing end cover (8) through a screw, the sealing end cover (8) being composed of two half-round cover plates, both side end faces of the sealing end cover (8) being attached with heat insulation pads (81).

4. The freeze-proof apparatus for a pipeline according to claim 2, wherein The slot width of the vertical slot (301) is twice the thickness of the cross-inserted rod (42).

5. The freeze-proof apparatus for a pipeline according to claim 1, wherein The electric heating element (45) comprises an electric heating wire (451) and a patch type thermocouple (452), the electric heating wire (451) being attached to the inner side of the silica gel pad layer (44) in a continuous and curved S shape, the electric heating wire (451) being electrically connected with the controller (52), the patch type thermocouple (452) being attached to the inner side of the silica gel pad layer (44) and being electrically connected with the controller (52).

6. The freeze-proof apparatus for a pipeline according to claim 1, wherein The liquid guiding element (46) comprises a liquid guiding pipe (461), the liquid guiding pipe (461) being provided with a plurality of liquid guiding pipes (461), the plurality of liquid guiding pipes (461) being evenly inserted into the silica gel pad layer (44), both ends of the plurality of liquid guiding pipes (461) being communicated through liquid guiding rings (462), one liquid guiding ring (462) being communicated with the liquid outlet end of the circulating pump (53) through a pipeline, the other liquid guiding ring (462) being communicated with the liquid storage cylinder (6) through a pipeline.

7. The freeze-proof apparatus for a pipeline according to claim 1, wherein The liquid storage cylinder (6) is sleeved with an outer protective heat preservation cylinder (61), and a ceramic heat storage layer (62) is filled between the outer protective heat preservation cylinder (61) and the liquid storage cylinder (6).

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