Flange separating device

Abstract

The invention discloses a flange separating device. The flange separation device comprises a separation assembly and a separation assembly, wherein the separation assembly comprises a driving part and two separation parts which are arranged and distributed in the first direction; any separation part comprises a connecting plate, a clamping part located on the connecting plate, a supporting part and a limiting part, the clamping part is provided with a clamping cavity used for containing a flange, the cavity wall of the clamping cavity is connected with a locking rod, the locking rod penetrates through the clamping cavity, the supporting part is located on one side of the clamping cavity, and the limiting part is located on the other side of the clamping cavity. The support is used for supporting a pipeline connected with a flange; the driving piece is arranged in a telescopic mode in the first direction, and the two ends, in the first direction, of the driving piece abut against the two limiting parts correspondingly. According to the flange separating device, the efficiency and safety are improved, the parallelism of the flange face is guaranteed, and the control difficulty is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of flange separation, and in particular to a flange separation device. Background Art

[0002] Various petrochemical, oil refining, coal chemical, electric power and other equipment often need to use large-diameter flange separation, especially flange separation in important positions and under hot conditions.

[0003] There are two commonly used flange separation methods: first, multiple people use crowbars to pry open the flange bolt holes. For large-diameter flanges, both sides are pried simultaneously, and multiple people work synchronously. Second, use a flange separator to insert it into the gap between the two flanges, and then use hydraulic or electric drive to gradually open the top of the separator to achieve the effect of gradually separating the flanges.

[0004] Although the above two methods can be operated within a certain range, both processes have their own shortcomings, as follows: The first method, although it can gradually separate the flange, requires more manpower, and at the same time requires high synchronization of the operators. If one or two people operate out of sync, the flange is difficult to pry open, and there are safety hazards. Usually, if a large-diameter flange cannot be pried open, it is necessary to add a temporary hanging point (welding), use a manual hoist for two-way assistance, and then synchronize with a crowbar to pry to achieve the effect of flange separation. This method is labor-intensive, time-consuming, and unsafe. The second method is to insert the flange separator directly into the gap between the two flanges. The concentricity of the flange in the above separation process cannot be controlled. Summary of the invention

[0005] The purpose of the present application is to provide a flange separation device to improve efficiency and safety, ensure the parallelism of the flange surfaces, and reduce the difficulty of operation control.

[0006] A flange separation device provided by the technical solution of the present application includes: a separation component, the separation component includes a driving member and two separation members arranged and distributed along a first direction; any of the separation members includes a connecting plate, a clamping portion, a supporting portion and a limiting portion located on the connecting plate, the clamping portion is provided with a clamping cavity for accommodating the flange, a locking rod is connected to the cavity wall of the clamping cavity, the locking rod passes through the clamping cavity, the supporting portion is located on one side of the clamping cavity, and is used to support a pipe connected to the flange; the driving member is telescopically arranged along the first direction, and the two ends of the driving member along the first direction are respectively abutted against the two limiting portions.

[0007] Optionally, the clamping cavity is defined by a first clamping plate and a second clamping plate which are arranged opposite to each other and located on the connecting plate, the first clamping plate is provided with a threaded hole, the locking rod is provided with an external thread matching the threaded hole, and a locking nut is threaded on the locking rod.

[0008] Optionally, the first clamping plate is located at the end of the connecting plate, the bottom of the first clamping plate is mounted on the connecting plate, and the top of the first clamping plate is provided with an inclined surface, which is inclined in a direction away from the first clamping plate 2.

[0009] Optionally, a guide rail extending along the first direction is arranged on the connecting plate, the second clamping plate is slidably arranged on the guide rail, and the locking nut abuts against the second clamping plate.

[0010] Optionally, the bottom of the second clamping plate is installed on the connecting plate, the top surface of the second clamping plate is higher than the top surface of the first clamping plate, the side of the flange is provided with an annular step, and the top surface of the second clamping plate is an arc surface adapted to the annular step.

[0011] Optionally, a suction port is provided on the top surface of the second clamping plate, a suction channel communicating with the suction port is provided inside the second clamping plate, and a vacuum adsorber is connected to the suction channel.

[0012] Optionally, the number of the separation components is at least two, and at least two of the separation components are evenly arranged along the circumference of the flange.

[0013] Optionally, the driving member includes a telescopic rod and a control motor, and the controller is control-connected to at least two of the control motors, and the controller controls at least two of the control motors to drive at least two of the telescopic rods to telescope synchronously.

[0014] Optionally, the support portion includes two support plates arranged opposite to each other along a second direction, and the second direction is perpendicular to the first direction.

[0015] Optionally, the limiting portion includes two limiting plates arranged along the second direction, the end of the driving member abuts against the ends of the two limiting plates, and the vertical distances between the two limiting plates and the center lines of the connecting plate along the first direction are equal.

[0016] The above technical solution has the following beneficial effects:

[0017] The flange separation device provided by the present application has two separate clamping cavities respectively clamping two flanges that need to be separated, and the supporting part supports the pipeline connected to the flange to maintain the axial horizontality and vertical parallelism of the flange and the pipeline, and the two ends of the driving member along the telescopic direction are respectively abutted on the two limiting parts, and when the driving member is extended, the two separation members are driven away from each other, thereby driving the two flanges located on the two separation members to separate. The driving force of the above separation process comes from the driving member, and no manual force is required, which saves manpower and improves construction efficiency. In addition, the clamping cavity clamps the flange and the supporting part supports the pipeline on the flange, thereby ensuring the horizontality of the flange and the pipeline, thereby ensuring the parallelism and concentricity of the two flanges, and reducing the difficulty of operation control. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of a flange separation device in one embodiment of the present application.

[0019] Figure 2 It is a side view of a flange separation device in one embodiment of the present application.

[0020] Figure 3 This is a structural schematic diagram of two flanges being separated by a flange separation device in one embodiment of the present application.

[0021] Reference Numbers

[0022] 100-Separate components.

[0023] 1-flange, 10-pipe, 11-annular step.

[0024] 2- Driving member.

[0025] 3-separating piece, 30-connecting plate, 31-clamping part, 310-first clamping plate, 311-second clamping plate, 32-supporting part, 320-supporting plate, 33-limiting part, 330-limiting plate, 34-locking rod, 35-locking nut, 36-embedded hexagonal head nut. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0027] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a variety of structural modes and implementation modes that can be replaced by those skilled in the art can be replaced with each other. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction to the technical solution of the invention.

[0028] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0029] like Figures 1 to 3 As shown, the flange separation device provided in the present application includes: a separation component 100.

[0030] Please refer to Figure 1 The separation assembly 100 includes a driving member 2 and two separation members 3 arranged and distributed along a first direction. The first direction is the direction in which the two flanges 1 need to be separated.

[0031] Any of the separation members 3 includes a connecting plate 30, a clamping portion 31, a supporting portion 32 and a limiting portion 33 located on the connecting plate 30, wherein the clamping portion 31 is provided with a clamping cavity for accommodating the flange 1. During operation, the clamping cavity is used to place the flange 1, and a locking rod 34 is detachably connected to the cavity wall of the clamping cavity. The supporting portion 32 is located on one side of the clamping cavity and is used to support the pipe 10 connected to the flange 1. Please refer to Figure 1 The locking rod 34 passes through the cavity structure of the clamping cavity and is limited on the cavity wall of the clamping cavity. When the flange 1 is limited in the clamping cavity, the locking rod 34 passes through the opening of the flange 1 to limit the flange 1. The locking rod 34 is made of high alloy steel to ensure that it has sufficient strength to withstand the tension during the separation process of the flange 1 and increase the safety factor.

[0032] Please refer to Figure 1 , the first direction is also consistent with the axial direction of the locking rod 34. The driving member 2 is retractable along the first direction, and the two ends of the driving member 2 along the first direction are respectively abutted on the two limiting parts 33, so as to drive the two separation members 3 to move away from each other along the first direction by extending, thereby driving the two flanges 1 located on the two separation members 3 to separate. The two ends of the driving member 2 can be respectively fixed on the two limiting parts 33 to achieve the abutment between the driving member 2 and the limiting parts 33, and at this time, when the driving member 2 is retracted, the two flanges can be driven to move closer to each other for installation.

[0033] The driving member 2 may be a jack driven by a hydraulic system, and the jack is controlled to extend, so as to control the two separation members 3 to move away from each other, thereby controlling the two flanges 1 respectively located in the two clamping cavities to separate.

[0034] The flange separation device provided in the embodiment of the present application comprises two separation members 3, wherein the clamping cavities of the two separation members 3 respectively clamp the two flanges 1 to be separated, the support portion 32 supports the pipe 10 connected to the flange 1, and maintains the axial horizontality and vertical parallelism of the flange 1 and the pipe 10, and the two ends of the driving member 2 along the telescopic direction respectively abut against the two limit portions 33, and when the driving member 2 is extended, the two separation members 3 are driven away from each other, thereby driving the two flanges 1 located on the two separation members 3 to separate, and the driving force of the above-mentioned separation process comes from the driving member 2, and no manual force is required, thus saving manpower and improving construction efficiency, and the clamping cavity clamps the flange 1 and the support portion 32 supports the pipe 10 on the flange 1, thereby ensuring the axial horizontality of the flange 1 and the pipe 10, thereby ensuring the parallelism and concentricity of the two flanges 1, and reducing the difficulty of operation control.

[0035] In an optional embodiment, the clamping cavity is defined by a first clamping plate 310 and a second clamping plate 311 that are arranged opposite to each other and located on the connecting plate 30, the first clamping plate 310 is provided with a threaded hole, the locking rod 34 is provided with an external thread that matches the threaded hole, and a locking nut 35 is screwed onto the locking rod 34. The first clamping plate 310 and the second clamping plate 311 are both fixed to the connecting plate 30 by welding, and the first clamping plate 310, the second clamping plate 311 and the portion of the connecting plate 30 between the first clamping plate 310 and the second clamping plate 311 define a U-shaped clamping cavity. The flange 1 is placed in the clamping cavity, and the opening on the flange 1 is aligned with the threaded hole of the first clamping plate 310 and the opening on the second clamping plate 311. The locking rod 34 passes through the opening on the second clamping plate 311 and the opening on the flange 1 in sequence, and one end is limited in the threaded hole of the first clamping plate 310, and the other end is fastened to the second clamping plate 311 through the locking nut 35 to lock the flange 1, so that the flange 1 cannot have any radial and circumferential displacement, thereby achieving the effect of controlling the parallelism of the sealing surface of the flange 1.

[0036] In an optional implementation, the inner side surface of the first clamping plate 310 is a flexible surface or a smooth surface to avoid damaging the sealing surface of the flange 1. The flexible surface can be achieved by arranging a rubber sheet on the inner side surface of the first clamping plate 310.

[0037] In an optional embodiment, the first clamping plate 310 is located at the end of the connecting plate 30, the bottom of the first clamping plate 310 is mounted on the connecting plate 30, and the top of the first clamping plate 310 is provided with an inclined surface, which is inclined in a direction away from the second clamping plate 311. In the embodiment of the present application, the inclined surface provided on the top of the first clamping plate 310 can form a wedge-shaped structure that is convenient for inserting into the two flanges 1 at the top of the two second clamping plates 311 after the two separation members 3 are docked. Among them, one end of the locking rod 34 is limited in the threaded hole of the first clamping plate 310, and the other end of the locking rod 34 is locked by the locking nut 35 abutting on the second clamping plate 311.

[0038] As an optional implementation of setting a threaded hole in the first clamping plate 310, a pre-embedded hexagonal nut 36 is welded in the first clamping plate 310, and the threaded hole of the pre-embedded hexagonal nut 36 is smaller than the threaded hole in the flange 1, so as to play the function of bolt locking the flange 1.

[0039] In an optional embodiment, the flange separation device further includes an elastic limiting piece, and the two opposite ends of the limiting piece are respectively mounted on the end surface or below the end of the first clamping plate 310 provided on the two connecting plates 30. When the two connecting plates 30 are in contact with each other, the limiting piece is in a folded state, and when the two connecting plates 30 are driven away from each other by the driving member 2, the limiting piece unfolds. The limiting piece blocks and limits the components between the two flanges 1, such as the blind plate, to prevent the above components from shaking and popping out during operation, thereby increasing the safety of the operation.

[0040] In an optional embodiment, the connecting plate 30 is provided with a guide rail extending in the first direction, the second clamping plate 311 is slidably provided on the guide rail, and the locking nut 35 abuts against the second clamping plate 311. In an optional embodiment in which the second clamping plate 311 slides on the guide rail, a strip-shaped slot is provided in the connecting plate 30 in the first direction, the slot of the strip-shaped slot is narrowed, and a sliding block is provided on the second clamping plate 311, which slides in the strip-shaped slot in the first direction and is limited by the slot of the strip-shaped slot. The second clamping plate 311 slides in the first direction to adjust the distance between the second clamping plate 311 and the first clamping plate 310, and can adapt to flanges 1 of various thicknesses, thereby increasing the adaptability of the flange separation device to flanges 1 of various thicknesses.

[0041] In an optional embodiment, the bottom of the second clamping plate 311 is mounted on the connecting plate 30, the top surface of the second clamping plate 311 is higher than the top surface of the first clamping plate 310, the side surface of the flange 1 is provided with an annular step 11, and the top surface of the second clamping plate 311 is an arc surface adapted to the annular step 11. Figure 3As shown, a side of the flange 1 close to the pipe 10 is sunken to define an annular step 11, and the top surface of the second clip plate 311 is set to an arc surface that matches the side surface of the flange 1, which is beneficial for the top surface of the second clip plate 311 to fit with the side surface of the flange 1, thereby increasing the support and limiting effect of the second clip plate 311 on the flange 1.

[0042] In an optional embodiment, a suction port is provided on the top surface of the second clamping plate 311, and a suction channel connected to the suction port is provided inside the second clamping plate 311, and a vacuum absorber is connected to the suction channel. When the flange separation device is working, the entrance of the suction channel is arranged on the side of the second clamping plate 311 and avoids the locking rod 34, and the vacuum absorber generates a negative pressure environment at the suction port through the suction channel, so that the top surface of the second clamping plate 311 and the side of the flange 1 are effectively fitted, and the two flanges 1 to be separated are stably fitted on the side of the second clamping plate 311, which is conducive to improving the parallelism of the flange 1. The suction port in the embodiment of the present application extends along the length direction of the arc-shaped top surface of the second clamping plate 311 to increase the suction effect on the flange 1.

[0043] In an optional embodiment, the number of the separation components 100 is at least two, and at least two of the separation components 100 are evenly arranged along the circumference of the flange 1. Taking the case where there are two separation components 100 as an example, the circumferential angle between the two separation components 100 is 180° and they are arranged on the flange 1. When separating the flange 1, the two separation components 100 work simultaneously to balance the force on the flange 1 along the circumferential direction, which can effectively control the parallelism of the flange 1 during separation and avoid tilting. When separating the flange 1 with a blind plate in the middle, since both sides are fastened with locking rods 34, the blind plate is limited and cannot be separated from the flange 1, and the operation process is safe and reliable. The number of separation components 100 can also be set to three, four, etc. evenly distributed along the circumference of the flange 1, and the installation method is the same as that when there are two separation components 100, which will not be repeated here.

[0044] In an optional embodiment, the driving member 2 includes a telescopic rod and a control motor, and the controller is connected to at least two of the control motors, and the controller controls at least two of the control motors to drive at least two of the telescopic rods to telescope synchronously. The telescopic rod in the embodiment of the present application is an electric telescopic rod. Under the control of the controller, at least two control motors synchronously drive the telescopic rod so that the telescopic rods extend to the same length, and synchronously drive at least two points of the two flanges 1 along the circumferential direction to separate synchronously, and the operation is safe and reliable, ensuring that the flanges 1 maintain precise parallelism during the separation process.

[0045] In an optional embodiment, the support portion 32 includes two support plates 320 arranged opposite to each other along a second direction, and the second direction is perpendicular to the first direction. Figures 1 to 3As shown, the support plate 320 is welded and fixed on the connecting plate 30, a single support plate 320 extends along the first direction, and two support plates 320 are arranged in a row along the second direction as a support structure, which stably supports the side wall of the pipeline 10. The two support plates 320 form two support structures extending in the axial direction on the side wall of the pipeline 10 to stably support the pipeline 10. Furthermore, the top surface heights of the two support plates 320 in the support portion 32 are kept consistent, so as to symmetrically support the side wall of the pipeline 10 and improve stability.

[0046] In an optional embodiment, the limiting portion 33 includes two limiting plates 330 arranged along the second direction, the end of the driving member 2 abuts against the ends of the two limiting plates 330, and the vertical distances between the two limiting plates 330 and the center line of the connecting plate 30 along the first direction are equal. Figures 1 to 3 As shown, the vertical distances between the two limit plates 330 and the center line of the connecting plate 30 along the first direction are equal, so that the driving force received is evenly transmitted to the connecting plate 30 and stably transmitted to the clamping portion 31 through the connecting plate 30, driving the two flanges 1 to separate from each other. The two limit plates 330 in the embodiment of the present application can be welded and fixed on the connecting plate 30 and located on the back of the connecting plate 30. The front of the connecting plate 30 is provided with a clamping portion 31 and a supporting portion 32 to avoid position interference.

[0047] The raw materials of the connecting plate 30 , the first clamping plate 310 , the second clamping plate 311 , the supporting plate 320 and the limiting plate 330 are all Q235B, the material of the bolts and nuts is 35CrMoA / 35CrMo, and the jack can be 2t.

[0048] The following describes the process of separating two flanges using the flange separation device.

[0049] Step 1: Install the separation assembly 100 on one side of a flange 1, tighten the locking nut 35 with a wrench, and then check whether there is any shaking.

[0050] Step 2: Use the same method to install another set of separation components 100 on the other side of the flange 1, tighten it according to the method in step 1, and check it.

[0051] Step 3: Install two sets of separation components 100 on another flange in a 180° symmetrical direction according to steps 1 and 2.

[0052] Step 4: Personnel on both sides install the driving member 2 at the same time, and make the driving member 2 run slowly. After reaching a certain tension, observe whether the two flanges 1 are parallel.

[0053] Step 5: According to step 4, the driving member 2 is driven synchronously to gradually open the two flanges 1 to the required gap position, and then the driving can be stopped.

[0054] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0055] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several other modifications can be made based on the principles of the present invention, which should also be considered as the protection scope of the present invention.

Claims

1. A flange separation device, characterized in that: include: A separation component, the separation component comprising a driving member and two separation members arranged and distributed along a first direction; Any of the separation members comprises a connecting plate, a clamping portion, a supporting portion and a limiting portion located on the connecting plate, the clamping portion is provided with a clamping cavity for accommodating a flange, a locking rod is connected to the cavity wall of the clamping cavity, the locking rod passes through the clamping cavity, and the supporting portion is located at one side of the clamping cavity and is used to support a pipe connected to the flange; The driving member is telescopically arranged along the first direction, and two ends of the driving member along the first direction are respectively abutted against the two limiting portions.

2. The flange separation device according to claim 1, characterized in that: The clamping cavity is defined by a first clamping plate and a second clamping plate which are arranged opposite to each other and located on the connecting plate. The first clamping plate is provided with a threaded hole, the locking rod is provided with an external thread which matches the threaded hole, and a locking nut is threaded on the locking rod.

3. The flange separation device according to claim 2, characterized in that: The first clamping plate is located at the end of the connecting plate, the bottom of the first clamping plate is mounted on the connecting plate, and the top of the first clamping plate is provided with an inclined surface, which is inclined in a direction away from the first clamping plate 2.

4. The flange separation device according to claim 1, characterized in that: The connecting plate is provided with a guide rail extending along a first direction, the second clamping plate is slidably provided on the guide rail, and the locking nut abuts against the second clamping plate.

5. The flange separation device according to claim 2, characterized in that: The bottom of the second clamping plate is mounted on the connecting plate, the top surface of the second clamping plate is higher than the top surface of the first clamping plate, the side surface of the flange is provided with an annular step, and the top surface of the second clamping plate is an arc surface adapted to the annular step.

6. The flange separation device according to claim 5, characterized in that: A suction port is provided on the top surface of the second clamping plate, a suction channel connected to the suction port is provided inside the second clamping plate, and a vacuum absorber is connected to the suction channel.

7. The flange separation device according to any one of claims 1 to 6, characterized in that: The number of the separation components is at least two, and at least two of the separation components are evenly arranged along the circumference of the flange.

8. The flange separation device according to any one of claims 1 to 6, characterized in that: The driving member includes a telescopic rod and a control motor. The controller is connected to at least two of the control motors. The controller controls at least two of the control motors to drive at least two of the telescopic rods to telescope synchronously.

9. The flange separation device according to any one of claims 1 to 6, characterized in that: The support portion includes two support plates arranged opposite to each other along a second direction, and the second direction is perpendicular to the first direction.

10. The flange separation device according to any one of claims 1 to 6, characterized in that: The limiting portion includes two limiting plates arranged along the second direction, the end of the driving member abuts against the ends of the two limiting plates, and the vertical distances between the two limiting plates and the center lines of the connecting plate along the first direction are equal.

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