Flange sealing device

Abstract

The utility model relates to a flange sealing device, and relates to the technical field of petrochemical engineering. The flange sealing device comprises two hoops which are oppositely arranged, each hoop comprises a bottom plate, a first connecting seat, a second connecting seat, two side walls and a sealing convex rib, the bottom plate is in an arc shape, and the first connecting seat and the second connecting seat are arranged at the two ends of the bottom plate respectively. The first connecting seat of one clamp is detachably connected with the second connecting seat of the other clamp, the sealing convex rib is arranged on the inner side surface of the bottom plate, the two side walls are oppositely arranged on the two sides of the bottom plate, the end faces of the two ends of the clamps are flat, a positioning block is arranged on the end face of the first end of the bottom plate, and a positioning groove is formed in the end face of the second end of the bottom plate. And the positioning block on one clamp can be inserted into the positioning groove on the other clamp. The positioning blocks and the positioning grooves are arranged on the hoops, so that the flat end faces of the two hoops can be quickly and accurately attached, environmental pollution and safety threats caused by flange leakage of equipment are effectively reduced, and smooth production is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of petroleum chemical industry, especially to a flange sealing device. BACKGROUND

[0002] Flange is also called flange flange plate or lug, is the connecting part between shaft and shaft, is used for the connection between pipe ends, is an important mechanical part, plays an important role in chemical industry, construction, petroleum and other fields. In the field of petroleum chemical production, when flange leakage occurs in system operation, not only will cause environmental pollution, but also may produce pipeline combustion, explosion or personnel casualty threat.

[0003] The Chinese patent with publication number CN207377984U discloses a flange sealing clamp, which is fixed on the flange through the elastic ring, and then the elastic ring is fixed by the clamping part. Due to the existence of elasticity, the connection stability of the flange will not be reduced in the case of vibration. However, the elastic ring of the above-mentioned flange sealing clamp is provided with a notch, and once flange leakage occurs, it cannot be sealed well. SUMMARY

[0004] The utility model provides a kind of flange sealing device, it can be well sealed to flange, effectively reduce the environmental pollution and security threat caused by flange leakage of equipment, guarantee production smoothly.

[0005] The utility model provides a kind of flange sealing device, including two oppositely arranged clamps, the clamp includes bottom plate, first connecting seat, second connecting seat, two side walls and sealing convex rib, the bottom plate is arc-shaped, the first connecting seat and the second connecting seat are respectively arranged at the both ends of the bottom plate, the first connecting seat of one clamp is detachably connected with the second connecting seat of another clamp, the sealing convex rib is arranged on the inner side surface of the bottom plate, two the side walls are oppositely arranged on the both sides of the bottom plate, the end face of the both ends of the clamp is flat, the end face of the first end of the bottom plate is equipped with positioning block, the end face of the second end of the bottom plate is equipped with positioning groove, the positioning block on one clamp can be inserted into the positioning groove on another clamp.

[0006] In one embodiment, the cross section of the positioning block is rectangular, the area of the end of the positioning block away from the bottom plate is less than the area of the end of the positioning block connected with the bottom plate, and each side surface of the positioning block is a bevel.

[0007] In one embodiment, the first connecting seat of one clamp is connected with the second connecting seat of another clamp by fastener.

[0008] In one embodiment, at least two connecting holes are formed on the first connecting seat and the second connecting seat, and the fastener is arranged in the connecting hole.

[0009] In one embodiment, the first connecting seat on one of the clamps is spaced apart from the second connecting seat on the other clamp.

[0010] In one embodiment, glue injection holes and exhaust holes are formed on the bottom plate, and first and second sealing members are arranged on the glue injection holes and the exhaust holes, respectively.

[0011] In one embodiment, sealing cavities are formed between the two sides of the sealing protrusions and the side walls, and each sealing cavity is in communication with one of the glue injection holes and one of the exhaust holes.

[0012] In one embodiment, the bottom plate is spaced apart from the flange.

[0013] In one embodiment, the width of the bottom of the sealing protrusion is greater than the width of the top of the sealing protrusion, and the side surface of the sealing protrusion is sealed with the surface taper of the flange.

[0014] In one embodiment, the width of the bottom of the side wall is greater than the width of the top of the side wall, and the inner side surface of the side wall is sealed with the surface taper of the flange.

[0015] Compared with the prior art, the positioning block and the positioning groove arranged on the end face of the clamp enable the flat end faces of the two clamps to be quickly and accurately attached, the first connecting seat and the second connecting seat are used to realize stable connection and sealing, and the sealing protrusions and the side walls arranged on the bottom plate can be attached to the two sides of the flange, respectively, to seal the side surface of the flange. Therefore, the flange sealing device of the utility model can realize good sealing of the flange, effectively reduce environmental pollution and safety threats caused by flange leakage of equipment, and ensure smooth production. BRIEF DESCRIPTION OF DRAWINGS

[0016] In the following, the utility model will be described in more detail based on the embodiments and with reference to the drawings.

[0017] Figure 1 is a perspective view of the flange sealing device in the embodiment of the utility model;

[0018] Figure 2 is a structural schematic view of the flange sealing device in the embodiment of the utility model;

[0019] Figure 3 is one of the exploded views of the flange sealing device in the embodiment of the utility model;

[0020] Figure 4is the second exploded view of the flange sealing device in the embodiment of the utility model;

[0021] Figure 5 is Figure 2 the enlarged view of A in the middle.

[0022] Reference signs:

[0023] 1, clamp; 11, bottom plate; 12, first connecting seat; 13, second connecting seat; 14, side wall; 15, sealing convex rib; 16, positioning block; 2, flange; 3, fastener; 4, first sealing element; 5, second sealing element; 100, positioning groove; 200, connecting hole; 300, glue injection hole; 400, exhaust hole; 500, sealing cavity. DETAILED DESCRIPTION

[0024] The utility model will be further described below with reference to the drawings.

[0025] As Figures 1 to 3 shown, the flange sealing device of the embodiment of the utility model includes two oppositely arranged clamps 1, the clamp 1 includes a bottom plate 11, a first connecting seat 12, a second connecting seat 13, two side walls 14 and a sealing convex rib 15, the bottom plate 11 is arc-shaped, the first connecting seat 12 and the second connecting seat 13 are arranged at the two ends of the bottom plate 11 respectively, the first connecting seat 12 of one clamp 1 is detachably connected with the second connecting seat 13 of another clamp 1, the sealing convex rib 15 is arranged on the inner side surface of the bottom plate 11, the two side walls 14 are oppositely arranged on the two sides of the bottom plate 11, the end face of the two ends of the clamp 1 is flat, the end face of the first end of the bottom plate 11 is provided with a positioning block 16, the end face of the second end of the bottom plate 11 is provided with a positioning groove 100, and the positioning block 16 on one clamp 1 can be inserted into the positioning groove 100 on another clamp 1.

[0026] The positioning block 16 and the positioning groove 100 arranged on the end face of the clamp 1 enable the flat end faces of the two clamps 1 to be quickly and accurately attached, and then the first connecting seat 12 and the second connecting seat 13 are used to realize stable connection and sealing, and the sealing convex rib 15 and the side wall 14 arranged on the bottom plate 11 can be attached to the two sides of the flange 2 respectively to seal the side face of the flange 2. Therefore, the flange sealing device of the embodiment can realize good sealing of the flange 2, effectively reduce environmental pollution and safety threats caused by flange 2 leakage of equipment, and ensure smooth production.

[0027] As Figure 3 and Figure 4As shown, further, the cross section of the positioning block 16 is rectangular, the area of the end of the positioning block 16 away from the bottom plate 11 is smaller than the area of the end of the positioning block 16 connected with the bottom plate 11, and each side surface of the positioning block 16 is inclined. Correspondingly, the groove wall of the positioning groove 100 is also inclined to match the surface of the positioning block 16. When the positioning block 16 is inserted into the positioning groove 100, due to the small front end and large rear end of the positioning block 16 and the inclined side surface, the positioning block 16 can be self-centered during the insertion process, so that the two clamps 1 can be quickly and accurately connected.

[0028] As shown in Figure 3 and Figure 4 , the first connecting seat 12 of one clamp 1 is connected with the second connecting seat 13 of another clamp 1 through the fastener 3. The positioning block 16 and the positioning groove 100 enable the two clamps 1 to be accurately positioned, but do not lock the two clamps 1, so that the fastener 3 needs to be additionally arranged to firmly fix the two clamps 1. The fastener 3 in the embodiment is a bolt connection pair.

[0029] As shown in Figure 2 , further, two connecting holes 200 are arranged on the first connecting seat 12 and the second connecting seat 13, and the fastener 3 is arranged in the connecting hole 200. One fastener 3 is arranged in each connecting hole 200, and two or more connecting holes 200 are arranged on the first connecting seat 12 and the second connecting seat 13, so that the connection of the two clamps 1 is more firm and less likely to be loosened. Figure 2 A top view of the flange sealing device after one clamp 1 is removed.

[0030] As shown in Figure 1 , the first connecting seat 12 on one clamp 1 is arranged apart from the second connecting seat 13 on another clamp 1, and the two are not in direct contact. When the fastener 3 is locked, pressure is applied to the first connecting seat 12 and the second connecting seat 13 at the same time, so that the two are pressed towards each other. Since the first connecting seat 12 and the second connecting seat 13 are not in direct contact, only the end faces of the two bottom plates 11 can resist the locking force of the fastener 3, so that the end faces of the two bottom plates 11 are also pressed towards each other, thereby realizing the sealing of the connection of the two bottom plates 11. If there is no gap between the first connecting seat 12 and the second connecting seat 13, the locking force of the fastener 3 can only act on the first connecting seat 12 and the second connecting seat 13, and it is difficult to ensure that a large pressure is generated between the end faces of the two bottom plates 11, thereby making it difficult to ensure a good sealing effect.

[0031] As shown in Figure 3 and Figure 4As shown, the bottom plate 11 is provided with glue injection holes 300 and exhaust holes 400, and the glue injection holes 300 and the exhaust holes 400 are respectively provided with first sealing members 4 and second sealing members 5. When the two clamps 1 are connected, the sealant is injected into the interior of the clamp 1 through the glue injection holes 300, so as to fill the gap between the flange 2 and the clamp 1, thereby further enhancing the sealing effect. When injecting the sealant, the first sealing members 4 and the second sealing members 5 need to be removed, and the air in the interior of the clamp 1 is exhausted through the exhaust holes 400 at the same time that the sealant is injected, so as to enable the injection of the sealant to be smoothly carried out. When the sealant overflows from the exhaust holes 400, it represents that the injection of the sealant has been completed, and at this time, the first sealing members 4 and the second sealing members 5 are installed again to block the glue injection holes 300 and the exhaust holes 400.

[0032] As shown in Figure 4 , the two sides of the sealing protruding ribs 15 and the side walls 14 form sealing cavities 500, and each sealing cavity 500 is communicated with a glue injection hole 300 and an exhaust hole 400. Due to the presence of the sealing protruding ribs 15, the two side walls 14 are separated into two sealing cavities 500, and in order to enable the sealant to be filled into the two sealing cavities 500, each sealing cavity 500 is communicated with a glue injection hole 300 and an exhaust hole 400.

[0033] Due to the need for the injection of the sealant, the bottom plate 11 is arranged to be spaced apart from the flange 2, and the two are not in direct contact, so as to enable the sealant to be smoothly filled into the interior of the clamp 1.

[0034] As shown in Figure 2 and Figure 5 , the width of the bottom of the sealing protruding rib 15 is greater than the width of the top of the sealing protruding rib 15, and the side surface of the sealing protruding rib 15 is sealed with the surface taper of the flange 2. The sealing protruding rib 15 has high strength due to this form, and is not easy to deform, and at the same time, the side surface of the sealing protruding rib 15 is a taper. In order to cooperate with the side surface of the sealing protruding rib 15, the edge of the flange 2 is provided with a taper similar to a chamfer, and the sealing protruding rib 15 and the flange 2 are sealed through the taper, so as to achieve a better sealing effect.

[0035] As shown in Figure 5 , the width of the bottom of the side wall 14 is greater than the width of the top of the side wall 14, and the inner side surface of the side wall 14 is sealed with the surface taper of the flange 2. Similarly to the connection mode between the sealing protruding rib 15 and the flange 2, the inner side surface of the side wall 14 and the other side of the flange 2 also adopt a taper connection mode for sealing, so as to achieve a better sealing effect.

[0036] Although the utility model has been described with reference to the preferred embodiments, various modifications can be made to it without departing from the scope of the utility model and equivalent replacements can be made to the components therein. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A flange sealing device, characterized in that, The clamp comprises two oppositely arranged clamps, the clamp comprises a bottom plate, a first connecting seat, a second connecting seat, two side walls and a sealing protruding rib, the bottom plate is arc-shaped, the first connecting seat and the second connecting seat are arranged at two ends of the bottom plate respectively, the first connecting seat of one clamp is detachably connected with the second connecting seat of the other clamp, the sealing protruding rib is arranged on the inner side surface of the bottom plate, the two side walls are oppositely arranged on two sides of the bottom plate, the end faces of the two ends of the clamp are flat, the end face of the first end of the bottom plate is provided with a positioning block, and the end face of the second end of the bottom plate is provided with a positioning groove, and the positioning block on one clamp can be inserted into the positioning groove on the other clamp.

2. The flange sealing device of claim 1, wherein, The cross section of the positioning block is rectangular, the area of the end of the positioning block away from the bottom plate is smaller than the area of the end of the positioning block connected with the bottom plate, and each side surface of the positioning block is a bevel.

3. The flange sealing device of claim 2, wherein, The first connecting seat of one clamp is connected with the second connecting seat of the other clamp through a fastener.

4. The flange sealing device of claim 3, wherein, At least two connecting holes are arranged on the first connecting seat and the second connecting seat, and the fastener is arranged in the connecting hole.

5. The flange sealing device of claim 4, wherein, The first connecting seat of one clamp is spaced apart from the second connecting seat of the other clamp.

6. The flange sealing device of claim 1, wherein, Glue injection holes and exhaust holes are arranged on the bottom plate, and first and second sealing members are arranged on the glue injection holes and the exhaust holes respectively.

7. The flange sealing device of claim 6, wherein, Sealing cavities are formed between the two sides of the sealing protruding rib and the side walls, and each sealing cavity is communicated with one glue injection hole and one exhaust hole.

8. The flange sealing device of claim 6, wherein, The bottom plate is spaced apart from the flange.

9. The flange sealing device of claim 1, wherein, The width of the bottom of the sealing protruding rib is greater than the width of the top of the sealing protruding rib, and the side surface of the sealing protruding rib is sealed with the surface taper of the flange.

10. The flange sealing device of claim 1, wherein, The width of the bottom of the side wall is greater than the width of the top of the side wall, and the inner side surface of the side wall is sealed with the surface taper of the flange.

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