Tube plate sealer

Abstract

The utility model relates to the technical field of tube plate sealers, and discloses a tube plate sealer which comprises a tube plate, a plurality of tube holes are formed in the side face of the tube plate, sealing rings are connected in the tube holes in a sleeved mode, and sealing structures are arranged in the sealing rings. According to the tube plate sealer, through the arrangement of the sealing structure and the inflation structure, the rubber ring and the left side plate and the right side plate which are fixedly connected to the two sides of the rubber ring are placed in the sealing ring, and the inflation ball is pinched in a reciprocating mode, so that internal air enters the air inlet pipe through the air one-way valve at one end of the inflation pipe in a circulating and reciprocating mode; the air outlet holes formed in the side face of the air inlet pipe release air into the sealed space formed by the rubber ring, the left side plate and the right side plate, the rubber ring expands under air pressure to seal the sealing ring, and when the sealing ring expands with heat and contracts with cold, the rubber ring can be always tightly attached to the inner wall of the sealing ring due to the elasticity of the rubber ring. Therefore, the sealing performance is always kept when the inner hole diameter of the sealing ring expands with heat and contracts with cold.

Description

Technical Field

[0001] The utility model relates to the technical field of tube sheet sealers, in particular to a tube sheet sealer. Background Art

[0002] Heat exchanger is a device that transfers part of the heat of hot fluid to cold fluid. It is also called heat exchanger. Heat exchanger plays an important role in chemical, petroleum, power, food and many other industrial production. In chemical production, heat exchanger can be used as heater, cooler, condenser, evaporator and reboiler, etc., and is widely used. When using heat exchanger, the tube sheet slot needs to be sealed, otherwise it will reduce the working effect of heat exchanger.

[0003] In the sealing structure of the heat exchange tube and the tube sheet disclosed in the publication number CN204924011U, although the utility model sets a sealing groove on the shell side, the sealing performance of the shell side is improved, the shell side medium is prevented from entering the gap between the tube sheet and the heat exchange tube, and the erosion of the corrosive medium on the shell side to the heat exchange tube and the tube sheet is reduced; the service life of the equipment is extended, the risk of stress corrosion is reduced, and the operating cost of the equipment is reduced.

[0004] However, the sealing structure of the heat exchange tube and the tube sheet has the following disadvantages:

[0005] (1) The sealing structure is prone to gaps due to thermal expansion and contraction, and the traditional sealing structure cannot adapt to the changes of thermal expansion and contraction;

[0006] (2) When water flows through the inside of the heat exchange tube, it will impact the sealing structure. The lack of structure to buffer the impact force will cause the sealing structure to loosen over a long period of time, affecting the sealing performance. Utility Model Content

[0007] 1. Technical issues to be solved

[0008] The technical problem solved by the utility model is to provide a tube sheet sealer which is highly practical, can be simply operated and has a relatively simple structure, thereby solving the problem that the traditional sealing structure proposed in the above background technology cannot adapt to the changes of thermal expansion and contraction, and the water flowing through the heat exchange tube will impact the sealing structure.

[0009] (II) Technical solution

[0010] To achieve the above purpose, the utility model is implemented through the following technical solutions: a tube sheet sealer, comprising a tube sheet, a plurality of tube holes are opened on the side of the tube sheet, a sealing ring is sleeved inside the tube hole, a sealing structure is arranged inside the sealing ring, the side of the sealing structure is connected to the inflation structure, a buffer structure is arranged on the back of the sealing structure, and one end of the buffer structure is fixedly connected to the buffer plate;

[0011] The sealing structure includes a left side plate sleeved on one side of the sealing ring, a rubber ring is fixedly connected to the side of the left side plate, a right side plate is fixedly connected to the side of the rubber ring, an air inlet is opened on the side of the left side plate, the interior of the air inlet is connected to the air inlet pipe, the air inlet pipe is fixedly connected to the side of the right side plate, and a plurality of air outlet holes are opened on both sides of the air inlet pipe in sequence from left to right.

[0012] Optionally, the inflatable structure includes a gas one-way valve connected to the air inlet, and an inflatable ball for inflation is connected to the surface of the gas one-way valve through an inflation tube. By squeezing the inflatable ball, the gas can be quickly flushed into the sealing structure through the inflation tube, which is more convenient to operate.

[0013] Optionally, the buffer structure includes a mounting plate axially symmetrically fixedly connected to the side of the right side plate, a rotating plate is provided on the surface of the mounting plate, and a moving structure is rotatably connected to the surface of the rotating plate through a telescopic structure. After the water flow hits the buffer plate, the buffer plate drives the moving structure to slide to buffer the impact force. At the same time, the telescopic structure synchronously buffers to quickly buffer the impact force.

[0014] Optionally, the telescopic structure includes a sliding rod rotatably connected to the side of the rotating plate, the surface of the sliding rod is slidably connected to a sleeve, and a small spring is arranged inside the sleeve and sleeved on the surface of the sliding rod. When the small spring contracts, the impact force can be buffered and energy absorbed.

[0015] Optionally, the motion structure includes a cross bar rotatably connected to the surface of the sleeve, a buffer spring is sleeved on the surface of the cross bar, and a bracket is fixedly connected to the side of the buffer spring. During the stretching of the buffer spring, the impact force can also be buffered by secondary energy absorption, thereby more effectively protecting the sealing structure.

[0016] Optionally, both ends of the bracket are fixedly connected to the surface of an axially symmetrically distributed mounting plate, a sliding hole matching the cross bar is opened on the side of the mounting plate, and the inside of the sliding hole is slidably connected to the cross bar, and the side of the cross bar is fixedly connected to the buffer plate, and the sliding hole can increase the stability of the cross bar movement.

[0017] (III) Beneficial effects

[0018] The utility model provides a tube sheet sealer, which has the following beneficial effects:

[0019] 1. The tube sheet sealer, through the setting of the sealing structure and the inflation structure, places the rubber ring and the left plate and the right plate fixedly connected on both sides thereof inside the sealing ring, and pinches the inflation ball back and forth so that the air inside it circulates back and forth through the gas one-way valve at one end of the inflation tube into the inside of the intake pipe, and the air outlet hole opened on the side of the intake pipe releases the gas into the sealed space formed by the rubber ring, the left plate and the right plate. The rubber ring expands due to the air pressure and seals the sealing ring. When the sealing ring expands and contracts due to heat and cold, the rubber ring itself has elasticity and can always keep in close contact with the inner wall of the sealing ring to maintain the sealing performance, thereby achieving the effect of always maintaining the sealing performance when the inner diameter of the sealing ring expands and contracts due to heat and cold.

[0020] 2. The tube sheet sealer has a buffer structure. When water flows hit the buffer plate, the buffer plate drives the cross bar fixed on the side to move inside the bracket and stretches the buffer spring. When the buffer spring is stretched, the impact force is buffered for the first time. Then, when the cross bar moves, it drives the sleeve connected at one end to move. When the sleeve moves, the sliding bar does not move, so it squeezes the small spring inside the sleeve. When the small spring is compressed, the impact force is also buffered for the second time, thereby achieving the effect of avoiding the displacement of the sealing structure caused by the force of long-term water flow impact and affecting the sealing performance of the sealing ring on the side of the tube sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the sealing structure and the inflation structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the buffer structure of the utility model;

[0024] Figure 4 It is a schematic diagram of the split structure of the utility model.

[0025] In the figure: 1. tube sheet; 2. sealing ring; 3. sealing structure; 31. left side plate; 32. rubber ring; 33. right side plate; 34. air intake pipe; 4. inflation structure; 41. gas one-way valve; 42. inflation pipe; 43. inflation ball; 5. buffer structure; 51. mounting plate; 52. telescopic structure; 521. sliding rod; 522. sleeve; 523. small spring; 53. motion structure; 531. cross bar; 532. buffer spring; 533. bracket; 6. buffer plate. DETAILED DESCRIPTION

[0026] 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. 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.

[0027] See also Figures 1 to 4 The utility model provides a technical solution: a tube sheet sealer, comprising a tube sheet 1, a plurality of tube holes are opened on the side of the tube sheet 1, a sealing ring 2 is sleeved inside the tube hole, a sealing structure 3 is arranged inside the sealing ring 2, the side of the sealing structure 3 is connected to the inflation structure 4, a buffer structure 5 is arranged on the back of the sealing structure 3, and a buffer plate 6 is fixedly connected to one end of the buffer structure 5.

[0028] Embodiment 1:

[0029] See also Figure 2 The sealing structure 3 includes a left side plate 31 sleeved on one side of the sealing ring 2, and the side of the left side plate 31 is fixedly connected to the right side plate 33 through a rubber ring 32. An air inlet is opened on the side of the left side plate 31, and the inside of the air inlet is connected to an air inlet pipe 34 with a plurality of air inlet holes opened on both sides. The air inlet pipe 34 is fixedly connected to the side of the right side plate 33, and the other end of the air inlet pipe 34 is connected to the gas check valve 41. The surface of the gas check valve 41 is sleeved with an inflatable ball 43 for inflation through a sleeved inflatable pipe 42;

[0030] By setting the sealing structure 3 and the inflation structure 4, the rubber ring 32 and the left plate 31 and the right plate 33 fixedly connected on both sides thereof are placed inside the sealing ring 2, and the inflation ball 43 is pinched back and forth so that the air inside it circulates back and forth through the gas one-way valve 41 at one end of the inflation tube 42 into the inside of the air inlet pipe 34, and the air outlet hole opened on the side of the air inlet pipe 34 releases the gas into the sealed space formed by the rubber ring 32, the left plate 31 and the right plate 33. The rubber ring 32 expands under the air pressure and seals the sealing ring 2. When the sealing ring 2 expands and contracts due to heat and cold, the rubber ring 32 itself has elasticity, so it can always keep in close contact with the inner wall of the sealing ring 2 to maintain the sealing performance, thereby achieving the effect of always maintaining the sealing performance when the inner diameter of the sealing ring 2 expands and contracts due to heat and cold;

[0031] Embodiment 2:

[0032] See also Figure 3The buffer structure 5 includes a mounting plate 51 which is fixedly connected to the side of the right side plate 33 in an axisymmetric manner. A rotating plate is arranged on the surface of the mounting plate 51. The surface of the rotating plate is rotatably connected to the sliding rod 521. The surface of the sliding rod 521 is slidably connected to a sleeve 522. A small spring 523 which is sleeved on the surface of the sliding rod 521 is arranged inside the sleeve 522. A cross bar 531 is rotatably connected to the side of the sleeve 522. A buffer spring 532 is sleeved on the surface of the cross bar 531. A bracket 533 is fixedly connected to the side of the buffer spring 532. Both ends of the bracket 533 are fixedly connected to the surface of the mounting plate 51 which is symmetrically distributed in an axisymmetric manner. A sliding hole which matches the cross bar 531 is opened on the side of the mounting plate 51. The inside of the sliding hole is slidably connected to the cross bar 531. The side of the cross bar 531 is fixedly connected to the buffer plate 6.

[0033] By setting the buffer structure 5, when the water flow hits the buffer plate 6, the buffer plate 6 drives the side fixed cross bar 531 to move inside the bracket 533, while stretching the buffer spring 532. When the buffer spring 532 is stretched, the impact force will be buffered for the first time. Then, when the cross bar 531 moves, it will drive the sleeve 522 connected at one end to move. When the sleeve 522 moves, since the sliding rod 521 does not move, it will squeeze the small spring 523 inside the sleeve 522. When the small spring 523 is compressed, the impact force will also be buffered for the second time, thereby achieving the effect of preventing the long-term water flow impact force from driving the sealing structure 3 to move and affecting the sealing performance of the sealing ring 2 on the side of the tube plate 1.

[0034] In the utility model, the working steps of the device are as follows:

[0035] First, place the rubber ring 32 and the left plate 31 and the right plate 33 fixedly connected on both sides thereof inside the sealing ring 2, and pinch the inflatable ball 43 back and forth so that the air inside it circulates back and forth through the gas one-way valve 41 at one end of the inflatable tube 42 into the air inlet pipe 34, and the air outlet holes opened on the side of the air inlet pipe 34 release the gas into the sealed space formed by the rubber ring 32, the left plate 31 and the right plate 33. Then, the rubber ring 32 expands due to the air pressure and seals the sealing ring 2. When the sealing ring 2 expands and contracts due to heat and cold, the rubber ring 32 itself has elasticity and can always keep a close fit. On the inner wall of the sealing ring 2, the sealing is maintained. Finally, when the water flow hits the buffer plate 6, the buffer plate 6 drives the side fixed cross bar 531 to move inside the bracket 533, while stretching the buffer spring 532. When the buffer spring 532 is stretched, the impact force will be buffered for the first time. Then, when the cross bar 531 moves, it will drive the sleeve 522 connected at one end to move. When the sleeve 522 moves, since the sliding rod 521 does not move, it will squeeze the small spring 523 inside the sleeve 522. When the small spring 523 is compressed, the impact force will also be buffered for the second time.

[0036] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0037] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tube sheet sealer, comprising a tube sheet (1), characterized in that: The side of the tube sheet (1) is provided with a plurality of tube holes, the inside of the tube holes is sleeved with a sealing ring (2), the inside of the sealing ring (2) is provided with a sealing structure (3), the side of the sealing structure (3) is connected to the inflation structure (4), the back of the sealing structure (3) is provided with a buffer structure (5), and one end of the buffer structure (5) is fixedly connected to a buffer plate (6); The sealing structure (3) comprises a left side plate (31) sleeved on one side of the sealing ring (2); a rubber ring (32) is fixedly connected to the side of the left side plate (31); a right side plate (33) is fixedly connected to the side of the rubber ring (32); an air inlet is provided on the side of the left side plate (31); the interior of the air inlet is connected to an air inlet pipe (34); the air inlet pipe (34) is fixedly connected to the side of the right side plate (33); and a plurality of air outlets are provided on both sides of the air inlet pipe (34) in sequence from left to right.

2. A tube sheet sealer according to claim 1, characterized in that: The inflatable structure (4) comprises a gas one-way valve (41) connected to the air inlet, an inflatable tube (42) is sleeved on the surface of the gas one-way valve (41), and an inflatable ball (43) for inflation is sleeved on one end of the inflatable tube (42).

3. The tube sheet sealer according to claim 1, characterized in that: The buffer structure (5) comprises a mounting plate (51) which is fixedly connected to the side of the right side plate (33) in an axisymmetric manner, a rotating plate is provided on the surface of the mounting plate (51), a telescopic structure (52) is rotatably connected to the surface of the rotating plate, and a moving structure (53) is rotatably connected to the surface of the telescopic structure (52).

4. A tube sheet sealer according to claim 3, characterized in that: The telescopic structure (52) comprises a sliding rod (521) rotatably connected to the side of the rotating plate, a sleeve (522) is slidably connected to the surface of the sliding rod (521), and a small spring (523) sleeved on the surface of the sliding rod (521) is arranged inside the sleeve (522).

5. The tube sheet sealer according to claim 3, characterized in that: The motion structure (53) comprises a cross bar (531) rotatably connected to the surface of the sleeve (522); a buffer spring (532) is sleeved on the surface of the cross bar (531); and a bracket (533) is fixedly connected to the side of the buffer spring (532).

6. A tube sheet sealer according to claim 5, characterized in that: The two ends of the bracket (533) are fixedly connected to the surface of the mounting plate (51) which is axially symmetrically distributed; a sliding hole which fits with the cross bar (531) is opened on the side of the mounting plate (51); the interior of the sliding hole is slidably connected to the cross bar (531); and the side of the cross bar (531) is fixedly connected to the buffer plate (6).

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