Tube bundle pressing and connecting device of closed cooling tower

Abstract

The utility model relates to the technical field of tube bundle pressing, and provides a closed cooling tower tube bundle pressing connecting device which comprises a cooling tower water tube and a pressing test tube, a connecting mechanism is arranged between the cooling tower water tube and the pressing test tube, and the connecting mechanism comprises two clamping seats I which are arranged in parallel; one ends of the two first clamping seats are rotationally connected with the same connecting shaft, the two ends of the connecting shaft are fixedly connected with second clamping seats symmetrically distributed with the first clamping seats, the same ends of the first clamping seats and the second clamping seats are fixedly connected with mounting seats, the inner sides of the mounting seats are rotationally connected with rotating blocks, and a hydraulic rod is fixedly connected between the two rotating blocks. Positioning assemblies are arranged at the two ends of the inner sides of the two second clamping bases. Through meshing transmission of the gear and the arc-shaped rack in the positioning assembly, the symmetrically-distributed positioning protruding blocks are driven to synchronously rotate, the cooling tower water pipe and the pressing test pipe are forcibly pushed to the center position of the clamping base, and the problem that the circle center of a pipeline deviates in traditional connection is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tube bundle press connection, specifically, and relates to a closed cooling tower tube bundle press connection device. BACKGROUND

[0002] The closed cooling tower is a kind of high-efficiency heat exchange equipment, is widely used in electric power, chemical industry, metallurgy and other industrial fields, and its core function is to realize heat dissipation by the indirect contact of circulating water and air, and the sealing property and the connection reliability of water circulating tube bundle are crucial, which needs to be tested by pressing, and the press test is one of commonly used methods to judge whether the water pipe connection is reliable, and in the press test, the press pipe and the pipeline to be tested are connected, then water is injected to observe;

[0003] Through the search, the patent (publication number: CN211398852U) in China discloses "a pipeline press connection mechanism, which comprises a connecting pipe and a test pipe, one end of the connecting pipe is provided with external threads, a nut is threadedly connected to the outer wall of the connecting pipe, a bearing is arranged on the right side of the nut, the bearing is slidably connected with the connecting pipe, a fixed ring with an inclined surface is arranged on the right side of the bearing, the fixed ring comprises a first fixed ring, a second fixed ring and a third fixed ring, arc-shaped blocks are arranged between the first fixed ring and the second fixed ring and between the second fixed ring and the third fixed ring respectively, arc-shaped grooves are formed in the outer edges of the arc-shaped blocks, elastic washers are arranged in the arc-shaped grooves, waterproof cloth is connected between the top of the arc-shaped block and the top of the fixed ring, and the right side of the third fixed ring is fixedly connected with a limiting block fixed to the right end of the connecting pipe";

[0004] However, in the implementation of the related technology, the above patent has certain technical defects, wherein the patent mainly seals the elastic washer by tightening the nut when the connecting pipe is connected with the test pipe, but the connecting pipe and the test pipe cannot be connected concentrically when they are connected, which can easily cause the center of the connecting pipe and the test pipe to deviate, thereby causing insufficient sealing and insufficient stability, and in view of this, the utility model provides a closed cooling tower tube bundle press connection device. UTILITY MODEL CONTENTS

[0005] The utility model provides a closed cooling tower tube bundle press connection device, which solves the problem that the pipeline cannot be accurately connected during the connection process.

[0006] The technical scheme of the utility model is as follows: a closed cooling tower tube bundle press connection device,

[0007] Including cooling tower water pipe and pressure test pipe, connecting mechanism is arranged between cooling tower water pipe and pressure test pipe, connecting mechanism includes two parallelly arranged clamping bases one, one end of two clamping bases one is rotationally connected with same connecting shaft, both ends of connecting shaft are fixedly connected with clamping bases two which are symmetrically distributed with clamping base one, same end of clamping base one and clamping base two is fixedly connected with mounting seat, the inner side of mounting seat is rotationally connected with rotating block, hydraulic rod is fixedly connected between two rotating blocks, the inner side of both ends of two clamping bases two is provided with positioning assembly for center positioning of cooling tower water pipe and pressure test pipe.

[0008] Preferably, the clamping base one and the clamping base two are both semicircular structures with the same radius and can be spliced into a complete annular structure.

[0009] Preferably, the outer side of the cooling tower water pipe and the pressure test pipe is sleeved with a gasket, and the inner wall of the two gaskets is in contact with the corresponding clamping base one and the clamping base two.

[0010] Preferably, the positioning assembly includes a sliding block penetrating through the side wall of the clamping base two, the sliding block is slidingly connected with the side wall of the clamping base two, the outer side of the sliding block is fixedly connected with a handle, the inner side of the sliding block is fixedly connected with an arc-shaped plate at both ends, the inner side of both ends of the clamping base two is rotationally connected with a positioning protrusion, one side of both the positioning protrusions is fixedly connected with a gear coaxially, and both gears are meshed with two arc-shaped racks respectively.

[0011] Preferably, the convex part of both the positioning protrusions deviates from the center of the clamping base two in the initial position, and the center positions of the two protrusions are symmetrically distributed along the center line of the clamping base two.

[0012] Preferably, the outer wall of the clamping base two is provided with an arc-shaped groove matched with the sliding block, and the sliding block and the arc-shaped groove are gap-fitted.

[0013] Preferably, one end of the sliding block is welded with a tension spring, the end of the tension spring away from the sliding block is welded with a fixed block, and the fixed block is fixedly connected to the outer wall of the clamping base two.

[0014] Preferably, the outer side of the clamping base two is provided with a locking assembly, the locking assembly includes a ratchet strip fixedly connected to the outer wall of the clamping base two, the outer side of the sliding block is rotationally connected with a pawl through a pin shaft, the pawl and the tooth groove of the ratchet strip are slidingly matched, one side of the pawl is fixedly connected with a rotating cap coaxially, a torsional spring is sleeved on the pin shaft of the pawl, one end of the torsional spring is welded with the sliding block, and the other end of the torsional spring is welded with the pawl.

[0015] The working principle and beneficial effects of the utility model are as follows:

[0016] 1. Through the meshing transmission of the gear and the arc-shaped rack in the positioning assembly, the symmetrically distributed positioning protrusions are driven to rotate synchronously, the cooling tower water pipe and the pressure test pipe are forced to push to the center position of the clamping seat, the problem of the traditional connection that the center of the pipe deviates is effectively solved, the concentric butt joint of the two pipes is ensured, and the sealing performance and the connection stability are significantly improved;

[0017] 2. The clamping seat 1 and the clamping seat 2 adopt a symmetrical semicircular structure that can be spliced, clamping is driven in combination with the hydraulic rod, the clamping spacing can be flexibly adjusted, the device is applicable to the connection of pipes with different diameters, and the universality and application range of the device are enhanced;

[0018] 3. The pawl and the ratchet rack are designed in cooperation, the position of the sliding block is automatically locked after positioning, reverse sliding is prevented, one-way self-locking function is realized in cooperation with the reset action of the torsional spring, and the stability of pipe positioning in the connection process is further ensured;

[0019] 4. The positioning operation can be completed by driving the sliding block through the handle, the linear pressure of the hydraulic rod is combined, the traditional multi-step fastening process is simplified, the installation efficiency is greatly improved, and the difficulty of manual operation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0021] Figure 1 It is a structure schematic view of a closed cooling tower pipe bundle pressure connection device of the utility model;

[0022] Figure 2 It is an explosion view of a closed cooling tower pipe bundle pressure connection device of the utility model;

[0023] Figure 3 It is a structure schematic view of a connecting mechanism of the utility model;

[0024] Figure 4 It is a structure schematic view of a positioning assembly of the utility model;

[0025] Figure 5 It is Figure 4 It is an enlarged structure schematic view of A of the utility model;

[0026] Figure 6 It is a structure schematic view of a locking assembly of the utility model.

[0027] In the diagram: 1. Cooling tower water pipe; 2. Pressure test pipe; 3. Connecting mechanism; 31. Card holder one; 32. Card holder two; 33. Connecting shaft; 34. Mounting base; 35. Rotating block; 36. Hydraulic rod; 37. Positioning assembly; 371. Slider; 372. Handle; 373. Arc groove; 374. Fixing block; 375. Tension spring; 376. Arc plate; 377. Positioning protrusion; 378. Gear; 379. Arc rack; 38. Locking assembly; 381. Ratchet; 382. Pawl; 383. Torsion spring; 384. Rotating cap; 4. Washer. Detailed Implementation

[0028] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0029] like Figures 1-6 As shown, this embodiment proposes a closed cooling tower tube bundle pressure testing connection device, including a cooling tower water pipe 1 and a pressure testing pipe 2. A connection mechanism 3 is provided between the cooling tower water pipe 1 and the pressure testing pipe 2. The connection mechanism 3 includes two parallel clamping seats 31. One end of the two clamping seats 31 is rotatably connected to the same connecting shaft 33. Both ends of the connecting shaft 33 are fixedly connected to clamping seats 32 that are symmetrically distributed with the clamping seats 31. The clamping seats 31 and clamping seats 32 are both semi-circular structures with the same radius and can be spliced ​​into a complete ring structure. The same end of the clamping seats 31 and clamping seats 32 is fixedly connected to a mounting base 34. The inner side of the mounting base 34 is rotatably connected to a rotating block 35. A hydraulic rod 36 is fixedly connected between the two rotating blocks 35. The inner ends of the two clamping seats 32 are respectively provided with positioning components 37 for positioning the cooling tower water pipe 1 and the pressure testing pipe 2.

[0030] By distributing the connection ports of the cooling tower water pipe 1 and the pressure test pipe 2 into the corresponding clamping seats 31 and 32, and then controlling the hydraulic rod 36 to drive the clamping seats 31 and 32 to move towards each other and clamp and seal the corresponding cooling tower water pipe 1 and pressure test pipe 2, the connection of the cooling tower water pipe 1 and the pressure test pipe 2 is realized. Since the distance between the clamping seats 31 and 32 is adjustable, the clamping seats 31 and 32 can connect cooling tower water pipes 1 and pressure test pipes 2 of different diameters, which greatly improves the versatility of the overall device.

[0031] Further, the cooling tower water pipe 1 and the pressure test pipe 2 are sleeved with gaskets 4 on the outer side, and the two gaskets 4 are in contact with the inner walls of the first clamping seat 31 and the second clamping seat 32. The gasket 4 is used to buffer the cooling tower water pipe 1 and the pressure test pipe 2, so as to avoid damage to the pipe wall of the cooling tower water pipe 1 or the pressure test pipe 2 when the first clamping seat 31 and the second clamping seat 32 clamp the pipe.

[0032] Further, the positioning assembly 37 includes a sliding block 371 penetrating through the side wall of the second clamping seat 32, the sliding block 371 is in sliding connection with the side wall of the second clamping seat 32, the outer side of the sliding block 371 is fixedly connected with a handle 372, one end of the sliding block 371 is welded with a tension spring 375, the end of the tension spring 375 away from the sliding block 371 is welded with a fixed block 374, the fixed block 374 is fixedly connected to the outer wall of the second clamping seat 32, the inner side of the sliding block 371 is fixedly connected with arc-shaped plates 376 at both ends, the inner side of the second clamping seat 32 is rotatably connected with positioning protrusions 377 at both ends, the two positioning protrusions 377 are coaxially fixedly connected with gears 378 on one side, the two gears 378 are respectively engaged with two arc-shaped racks 379, the protruding portions of the two positioning protrusions 377 are offset from the center of the second clamping seat 32 in the initial position, and the center positions of the two protrusions 377 are symmetrically distributed along the center line of the second clamping seat 32, and the outer wall of the second clamping seat 32 is provided with an arc-shaped groove 373 matched with the sliding block 371, and the sliding block 371 is in clearance fit with the arc-shaped groove 373.

[0033] By operating the handle 372, the sliding block 371 slides along the arc-shaped groove 373, so that the two arc-shaped racks 379 slide synchronously, and since the arc-shaped racks 379 are engaged with the gears 378, the two gears 378 rotate synchronously, so that the two positioning protrusions 377 rotate and the protruding portions of the positioning protrusions 377 are in contact with the pipe wall of the cooling tower water pipe 1 or the pressure test pipe 2. The protruding portions of the positioning protrusions 377 exert a pushing force on the two ends of the cooling tower water pipe 1 or the pressure test pipe 2 during rotation and move the cooling tower water pipe 1 or the pressure test pipe 2 to the center position of the second clamping seat 32. Then, by controlling the hydraulic rod 36 to drive the first clamping seat 31 and the second clamping seat 32 to move towards each other and clamp the corresponding cooling tower water pipe 1 and pressure test pipe 2, the cooling tower water pipe 1 and pressure test pipe 2 are centered and connected, thereby greatly improving the connection accuracy of the cooling tower water pipe 1 and pressure test pipe 2 and avoiding the problem of deviation of the cooling tower water pipe 1 and pressure test pipe 2 during connection.

[0034] Further, the outer side of the card seat two 32 is provided with a locking assembly 38, the locking assembly 38 includes a ratchet strip 381 fixedly connected to the outer wall of the card seat two 32, the outer side of the sliding block 371 is rotatably connected with a pawl 382 through a pin shaft, the pawl 382 is slidably matched with the tooth groove of the ratchet strip 381, the pawl 382 is coaxially fixedly connected with a rotating cap 384 on one side, the pin shaft of the pawl 382 is sleeved with a torsional spring 383, one end of the torsional spring 383 is welded with the sliding block 371, the other end of the torsional spring 383 is welded with the pawl 382.

[0035] Working principle: through the connection port of the cooling tower water pipe 1 and the pressure test pipe 2 is arranged in the corresponding card seat one 31 and card seat two 32, then the handle 372 is operated to make the sliding block 371 slide along the arc-shaped groove 373, at this time the tension spring 375 is compressed to accumulate potential energy, so that the two arc-shaped ratchet strips 379 slide synchronously, since the arc-shaped ratchet strip 379 is engaged with the gear 378, so the two gears 378 rotate synchronously, so that the two positioning lugs 377 rotate and the convex part of the positioning lug 377 abuts against the pipe wall of the cooling tower water pipe 1 or the pressure test pipe 2, the convex part of the positioning lug 377 exerts a pushing force on both ends of the cooling tower water pipe 1 or the pressure test pipe 2 during the rotation process, and the cooling tower water pipe 1 or the pressure test pipe 2 is moved to the center position of the card seat two 32, then the hydraulic rod 36 is controlled to drive the card seat one 31 and the card seat two 32 to move towards each other, and the corresponding cooling tower water pipe 1 and pressure test pipe 2 are clamped, so that the cooling tower water pipe 1 and the pressure test pipe 2 are center butted;

[0036] During the movement of the sliding block 371, the pawl 382 will move along the ratchet strip 381, and the pawl 382 will cooperate with the corresponding tooth groove of the ratchet strip 381, so that the reverse movement of the pawl 382 is limited, and the reverse sliding of the sliding block 371 is limited, so that the positioning lug 377 can stably support the cooling tower water pipe 1 and the pressure test pipe 2, and the stability of the connection of the cooling tower water pipe 1 and the pressure test pipe 2 is greatly improved;

[0037] When it is necessary to remove the cooling tower water pipe 1 and the pressure test pipe 2, the rotating cap 384 is rotated to make the pawl 382 disengage from the limiting pawl 382, at this time the tension spring 375 releases the potential energy, so that the sliding block 371 slides reversely, so that the arc-shaped ratchet strip 379 drives the gear 378 to rotate reversely, so that the positioning lug 377 is disengaged from the cooling tower water pipe 1 and the pressure test pipe 2, and then the hydraulic rod 36 is controlled to make the card seat one 31 and the card seat two 32 rotate away from each other, so that the cooling tower water pipe 1 and the pressure test pipe 2 can be removed, the whole process is simple to operate, and the cooling tower water pipe 1 and the pressure test pipe 2 can be quickly disassembled and assembled.

[0038] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A closed cooling tower tube bundle press connection device, characterized in that, include Cooling tower water pipe (1); Pressure test tube (2); The connecting mechanism (3) is provided between the cooling tower water pipe (1) and the pressure test pipe (2). The connecting mechanism (3) includes two parallel card seats (31). One end of the two card seats (31) is rotatably connected to the same connecting shaft (33). Both ends of the connecting shaft (33) are fixedly connected to card seats (32) symmetrically distributed with card seats (31). The same end of card seats (31) and card seats (32) is fixedly connected to a mounting base (34). The inner side of the mounting base (34) is rotatably connected to a rotating block (35). A hydraulic rod (36) is fixedly connected between the two rotating blocks (35). Two positioning components (37); the two positioning components (37) are respectively set at the inner ends of the two card holders (32) and are used to position the cooling tower water pipe (1) and pressure test pipe (2) in a circular position.

2. A closed cooling tower tube bundle press connection device according to claim 1, characterized in that, Both the card holder one (31) and the card holder two (32) are semi-circular structures with the same radius, and the two can be spliced ​​together to form a complete circular structure.

3. A closed cooling tower tube bundle press connection device according to claim 1, characterized in that, The cooling tower water pipe (1) and the pressure test pipe (2) are both fitted with gaskets (4), and the two gaskets (4) abut against the inner walls of the corresponding card holder one (31) and card holder two (32).

4. A closed cooling tower tube bundle press connection device according to claim 1, characterized in that, The positioning component (37) includes a slider (371) that penetrates the side wall of the second card holder (32). The slider (371) is slidably connected to the side wall of the second card holder (32). A handle (372) is fixedly connected to the outer side of the slider (371). Arc plates (376) are fixedly connected to both ends of the inner side of the slider (371). Positioning protrusions (377) are rotatably connected to both ends of the inner side of the second card holder (32). Gears (378) are coaxially fixedly connected to one side of each of the two positioning protrusions (377). The two gears (378) mesh with two arc racks (379) respectively.

5. A closed cooling tower tube bundle press connection device according to claim 4, characterized in that, The protrusions of the two positioning protrusions (377) are both offset from the center of the card holder (32) in their initial positions, and the center positions of the two protrusions (377) are symmetrically distributed along the center line of the card holder (32).

6. A closed cooling tower tube bundle press connection device according to claim 4, characterized in that, The outer wall of the card holder (32) is provided with an arc groove (373) that matches the slider (371), and the slider (371) and the arc groove (373) are in clearance fit.

7. A closed cooling tower tube bundle press connection device according to claim 4, characterized in that, A tension spring (375) is welded to one end of the slider (371), and a fixing block (374) is welded to the end of the tension spring (375) away from the slider (371). The fixing block (374) is fixedly connected to the outer wall of the card seat (32).

8. A closed cooling tower tube bundle press connection device according to claim 4, characterized in that, The outer side of the card seat two (32) is provided with a locking assembly (38), the locking assembly (38) includes a ratchet bar (381) fixedly connected to the outer wall of the card seat two (32), the outer side of the sliding block (371) is rotatably connected with a ratchet pawl (382) through a pin shaft, the ratchet pawl (382) is in sliding fit with the tooth groove of the ratchet bar (381), one side of the ratchet pawl (382) is coaxially fixedly connected with a rotating cap (384), a torsional spring (383) is sleeved on the pin shaft of the ratchet pawl (382), one end of the torsional spring (383) is welded with the sliding block (371), and the other end of the torsional spring (383) is welded with the ratchet pawl (382).

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