Wellhead electromagnetic heating device with uniform heating function

Abstract

The well mouth electromagnetic heating device comprises a shell, the shell is of a hollow structure, an insulating layer is fixedly installed on the inner wall of the shell, a spiral electromagnetic induction coil is fixedly installed on the inner wall of the insulating layer, an inner ring of the electromagnetic induction coil is installed on a heat preservation layer in a winding mode, and a heating tank is fixedly installed on the inner wall of the heat preservation layer. The stirring column and the metal rod rotate along with the rotating rod to stir liquid in the heating tank, so that different parts of the liquid are fully mixed, the metal rod generates induction heat under the action of a magnetic field, the heat can be diffused in the liquid more quickly and uniformly, the phenomenon of temperature stratification is avoided, and the heating uniformity is further improved. Cleaning liquid is injected into the first channel of the rotating rod through the connector, the cleaning liquid is sprayed out of the nozzle through the second channel, the sprayed cleaning liquid comprehensively cleans the interior of the heating tank, meanwhile, the scraping plate can scrape the inner wall of the heating tank in the stirring process, and impurities or precipitates in the liquid are prevented from being attached to the inner wall.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial wellhead heating technical field, specifically, relate to a wellhead electromagnetic heating device of even heating. BACKGROUND

[0002] In the exploitation process of petroleum, natural gas and the like, the medium (such as crude oil, natural gas and the like) of wellhead needs to keep certain temperature to prevent solidification, viscosity increase and the like, so as to ensure the smoothness of exploitation and transportation.At present, the common wellhead heating device has resistance heating device and traditional electromagnetic heating device.The resistance heating device has the problems of low heating efficiency and large energy consumption, and local overheating phenomenon is easy to appear, leading to the damage of wellhead components.Although the traditional electromagnetic heating device has relatively high heating efficiency, due to the uneven distribution of its magnetic field, it will cause uneven heating of different parts of wellhead, affect the heating effect and the normal flow of medium, and further reduce the production efficiency and increase the production cost.Therefore, an electromagnetic heating device for wellhead capable of realizing uniform heating is urgently needed.

[0003] The existing device has the following disadvantages: the liquid in the heating tank of the existing device is in a relatively static state, and the liquid in different parts is difficult to mix fully, and when heat is transferred in the liquid, temperature stratification phenomenon is easy to appear, that is, the temperature difference between the upper and lower layers and the edge and center positions is large, and uniform heating cannot be realized, thereby affecting the heating effect.The existing device is difficult to clean the inside of the heating tank comprehensively, and in the long-term use process, impurities and precipitates in the liquid will gradually accumulate on the inner wall of the heating tank, which not only affects the heating efficiency, but also may corrode the heating tank and shorten the service life of the equipment. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a wellhead electromagnetic heating device of even heating to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a wellhead electromagnetic heating device of even heating, including the shell, the shell is hollow structure and is internally fixedly installed with the insulating layer, the insulating layer inner wall is fixedly installed with spiral electromagnetic induction coil, the electromagnetic induction coil inner ring is installed on the heat preservation layer, and the heat preservation layer inner wall is fixedly installed with the heating tank.

[0006] As the preferred technical scheme of the utility model, a pair of liquid inlets are arranged in the heating tank through the one end of the shell, and a pair of liquid outlets are arranged in the heating tank through the other end of the shell.

[0007] As the preferred technical scheme of the utility model, the motor is fixedly installed at the middle of one end of the shell, the mounting holes are formed through the middle of both ends of the shell, the bearings are fixedly installed in the middle of the mounting holes, and the sealing rings are installed beside the bearings.

[0008] As the preferred technical scheme of the utility model, the motor is fixedly installed at the middle of one end of the shell, the mounting holes are formed through the middle of both ends of the shell, the bearings are fixedly installed in the middle of the mounting holes, and the sealing rings are installed beside the bearings.

[0009] As the preferred technical scheme of the utility model, the motor is fixedly installed at the middle of one end of the shell, the mounting holes are formed through the middle of both ends of the shell, the bearings are fixedly installed in the middle of the mounting holes, and the sealing rings are installed beside the bearings.

[0010] As the preferred technical scheme of the utility model, the motor is fixedly installed at the middle of one end of the shell, the mounting holes are formed through the middle of both ends of the shell, the bearings are fixedly installed in the middle of the mounting holes, and the sealing rings are installed beside the bearings.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) The stirring column and the metal rod rotate with the rotating rod, the liquid in the heating tank is stirred, different parts of the liquid are fully mixed, the metal rod generates induced heat under the action of the magnetic field, the heat can be more quickly and evenly spread in the liquid, the temperature stratification phenomenon is avoided, and the uniformity of heating is further improved.

[0013] (2) The cleaning liquid is injected into the first channel of the rotating rod through the joint, the cleaning liquid is sprayed out of the nozzle through the second channel, the sprayed cleaning liquid fully cleans the inside of the heating tank, and the scraper can scrape the inner wall of the heating tank in the stirring process, so that the impurities or precipitates in the liquid are prevented from adhering to the inner wall. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise of the drawings.

[0015] Figure 1 It is a structure schematic view of the overall section of the wellhead electromagnetic heating device according to the utility model embodiment;

[0016] Figure 2 It is a structure schematic view of the overall section of the wellhead electromagnetic heating device according to the utility model Figure 1Structure schematic view at middle A;

[0017] Figure 3 According to the utility model Figure 1 Structure schematic view at middle B;

[0018] Figure 4 According to the utility model Figure 1 Structure schematic view at middle C.

[0019] Reference signs:

[0020] 1, shell; 2, insulating layer; 3, electromagnetic induction coil; 4, heat preservation layer; 5, heating tank; 6, liquid inlet; 7, liquid outlet; 8, motor; 9, mounting hole; 10, bearing; 11, sealing ring; 12, rotating rod; 13, joint; 14, first channel; 15, stirring column; 16, scraper; 17, metal rod; 18, second channel; 19, nozzle; 20, check valve. Specific implementation

[0021] Next, the utility model is further described in combination with the drawings and specific implementation:

[0022] Please refer to Figures 1-4 According to the utility model embodiment, a uniform heating wellhead electromagnetic heating device is provided, which comprises a shell 1, the shell 1 is a hollow structure and is fixedly installed with an insulating layer 2 on the inner wall, the insulating layer 2 is fixedly installed with a spiral electromagnetic induction coil 3 on the inner wall, the electromagnetic induction coil 3 is annularly wound and installed on a heat preservation layer 4, and the heat preservation layer 4 is fixedly installed with a heating tank 5 on the inner wall.

[0023] Among them, the shell 1 is the external supporting structure of the whole device, which plays a role in protecting the internal components. The insulating layer 2 prevents current leakage generated by the electromagnetic induction coil, ensuring safe use. The spiral electromagnetic induction coil 3 generates a magnetic field after being electrified, and heat is generated when the metal rod 17 rotates to cut the magnetic field, realizing the heating function. The heat preservation layer 4 reduces the heat loss of the heating tank, maintains the heating efficiency and temperature stability.

[0024] In this embodiment, a pair of liquid inlets 6 are formed in the shell 1 and penetrate into the heating tank 5, and a pair of liquid outlets 7 are formed in the other end of the shell 1 and penetrate into the heating tank 5.

[0025] Among them, the liquid inlet 6 is the channel for the liquid to enter the heating tank. The liquid outlet 7 is the channel for the heated liquid to flow out of the heating tank.

[0026] In this embodiment, a motor 8 is fixedly installed in the middle of one end of the shell 1, mounting holes 9 are formed in the middle of both ends of the shell 1, bearings 10 are fixedly installed in the middle of the mounting holes 9, and sealing rings 11 are installed on both sides of the bearings 10 in the mounting holes 9.

[0027] The mounting hole 9 provides a position for the installation of the bearing and the rotating rod. The bearing 10 reduces the friction resistance when the rotating rod 12 rotates, ensuring smooth rotation. The sealing ring 11 prevents liquid from leaking from the mounting hole and serves as a seal.

[0028] In this embodiment, the output end of the motor 8 is installed with a rotating rod 12, both ends of which are connected with bearings 10 and sealing rings 11. The housing 1 is fixedly installed with a connector 13 at the middle of one end of the liquid outlet 7.

[0029] The rotating rod 12 rotates under the drive of the motor 8, driving the stirring column 15 and other components to rotate. The connector 13 can be used to connect external pipelines, such as injecting water or cleaning liquid, etc.

[0030] In this embodiment, the rotating rod 12 is internally provided with a first channel 14 and is connected with the connector 13. The rotating rod 12 is fixedly installed with multiple groups of stirring columns 15 inside the heating tank 5. The stirring column 15 is fixedly installed with a scraper 16 at the end thereof. The stirring column 15 is fixedly installed with a metal rod 17 at the end close to the scraper 16.

[0031] The first channel 14 is located inside the rotating rod and is a channel for the transmission of liquid (such as cleaning liquid). The stirring column 15 stirs the liquid in the heating tank to promote uniform mixing of the liquid. The scraper 16 scrapes the inner wall of the heating tank during stirring to prevent impurities and sediments from adhering. The metal rod 17 generates induced heat under the action of a magnetic field, assisting in stirring and improving heating uniformity.

[0032] In this embodiment, the stirring column 15 is internally provided with a second channel 18 at the end close to the rotating rod 12 and is connected with the first channel 14. The stirring column 15 is provided with a spray port 19 on the side wall and is connected with the second channel 18. The spray port 19 is installed with a one-way valve 20.

[0033] The second channel 18 is connected with the first channel 14, allowing the liquid to be transmitted to the spray port 19 on the side wall of the stirring column. The one-way valve 20 controls the liquid to flow out only in one direction, preventing the heated liquid from entering the inside of the spray port 19.

[0034] In the specific application, the shell 1 is carried to the wellhead suitable position and fixedly installed, the liquid to be heated is flowed into the heating tank 5 through the liquid inlet 6, then the electromagnetic induction coil 3 is powered, the electromagnetic induction coil 3 generates an alternating magnetic field, at this time, the heating tank 5 generates heat under the action of the magnetic field, and the liquid in the tank is heated. At the same time, the motor 8 is started to drive the rotating rod 12 to rotate, the stirring column 15 on the rotating rod 12 rotates, and the liquid in the heating tank 5 is stirred to fully mix different parts of the liquid and promote the heat to uniformly spread in the liquid. In addition, the metal rod 17 on the stirring column 15 also generates induced heat under the action of the magnetic field when rotating, which assists heating and further improves the uniformity of heating to avoid temperature stratification. The heated liquid flows out of the device through the liquid outlet 7 and is delivered to the place where it is needed. When cleaning is needed, the connector 13 is connected with the pipeline conveying cleaning liquid, the cleaning liquid enters the first channel 14 in the rotating rod 12 through the connector 13, the cleaning liquid flows into the second channel 18 in the stirring column 15 through the first channel 14, and then is sprayed out through the spray port 19 in the side wall of the stirring column 15 to comprehensively clean the inside of the heating tank 5. The stirring column 15 drives the scraper 16 to rotate to scrape the inner wall of the heating tank 5, and scrape off the impurities and precipitates attached to the inner wall together with the cleaning liquid.

[0035] In the description of the utility model, it is to be explained that, the terms "top", "bottom", "one side", "the other side", "front", "back", "intermediate position", "interior", "top end", "bottom end" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not indicative or suggestive of the devices or elements indicated must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as a limitation on the utility model; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A uniformly heated wellhead electromagnetic heating device, characterized by, Including shell (1), the shell (1) is hollow structure and the inner wall fixed mounting has insulating layer (2), the insulating layer (2) inner wall fixed mounting has helical electromagnetic induction coil (3), the electromagnetic induction coil (3) inner ring winding installation is on the heat preservation layer (4), the heat preservation layer (4) inner wall fixed mounting has heating tank (5).

2. A uniformly heated wellhead electromagnetic heating device according to claim 1, characterized in that The shell (1) one end penetrates to the heating tank (5) and is opened in a pair of liquid inlet (6), the shell (1) other end penetrates to the heating tank (5) and is opened in a pair of liquid outlet (7).

3. An evenly heated wellhead electromagnetic heating device according to claim 1, characterized in that, The shell (1) is located in the middle part of liquid inlet (6) one end fixed mounting has motor (8), the shell (1) both ends middle part are all opened in the mounting hole (9) and are penetrated, the mounting hole (9) middle part are all fixed mounting has bearing (10), the mounting hole (9) is located in the both sides of bearing (10) and is installed sealing ring (11).

4. An evenly heated wellhead electromagnetic heating device according to claim 3, characterized in that The output end of motor (8) is installed with rotating rod (12), the both ends of rotating rod (12) are connected bearing (10) and sealing ring (11), the shell (1) is located in the middle part of liquid outlet (7) one end fixed mounting has connector (13).

5. An evenly heated wellhead electromagnetic heating device according to claim 4, characterized in that The rotating rod (12) is opened in first channel (14) and is communicated connector (13) in the inside, the rotating rod (12) is fixedly installed with multiple groups of stirring column (15) in the heating tank (5), the stirring column (15) end fixed mounting has scraper (16), the stirring column (15) is fixedly installed with metal rod (17) near scraper (16) one end.

6. An evenly heated wellhead electromagnetic heating device according to claim 5, characterized in that The stirring column (15) is opened in second channel (18) and is communicated first channel (14) in the inside near rotating rod (12) one end, the stirring column (15) side wall is opened in spout (19) and is communicated second channel (18), the spout (19) is installed with check valve (20).

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