A condenser titanium tube sheath expander

Abstract

The utility model discloses a condenser titanium tube sheath expander and extractor, which belongs to the technical field of condenser maintenance, and comprises a connector, one end of which is detachably connected to a handle, a slidable sleeve on the handle is provided with an impact hammer, and the other end of the connector is provided with a plurality of elastic arms arranged in a ring shape, the elastic arms are connected to the connector through an arc-shaped boss protruding outward at the end close to the connector, and a barbed hook is provided at the end of the elastic arms away from the connector; a loose nut is threadedly connected to the end of the connector away from the handle, and a bell mouth is provided at the end of the loose nut close to the arc-shaped boss. The utility model changes the original disassembly method, is simple and convenient to operate, will not damage the condenser titanium tube, is highly efficient, and greatly shortens the repair period.

Description

Technical Field

[0001] The utility model relates to the technical field of condenser maintenance, in particular to a condenser titanium tube sheath expander and puller. Background Art

[0002] The overhaul of the condenser in a power plant is an important project in the overhaul of the unit. It mainly checks the wear and blockage of the heat exchanger tube bundle. The replacement of the titanium tube sheath of the condenser is the main work of the overhaul. The traditional sheath replacement is time-consuming and labor-intensive, and the titanium tube is easily damaged during the operation. Due to the large number of sheaths, the work efficiency is low, and a lot of overhaul time is wasted. Therefore, it is urgent to design a new sheath removal tool to improve the operation safety and overhaul efficiency. Utility Model Content

[0003] The utility model aims to provide a condenser titanium tube sheath expander and puller to solve the above-mentioned problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model discloses a titanium tube sheath expander and extractor for a condenser, comprising a connector, one end of which is detachably connected to a handle, a slidable sleeve on the handle is provided with an impact hammer, the other end of the connector is provided with a plurality of elastic arms arranged in a ring shape, the elastic arm is connected to the connector through an arc-shaped boss protruding outward at one end close to the connector, and a barbed hook claw is provided at one end of the elastic arm away from the connector;

[0006] A clamping nut is threadedly connected to one end of the connector away from the handle, and a bell mouth is provided at one end of the clamping nut close to the arc-shaped boss.

[0007] Furthermore, a retaining ring is provided at one end of the handle away from the connecting head, and the retaining ring is limitedly matched with the impact hammer.

[0008] Furthermore, the connector is provided with a stud at one end close to the handle, and the stud is threadedly connected to a reserved threaded hole on the handle.

[0009] Furthermore, a polygonal anti-rotation portion is provided at the connection position between the stud and the connecting head.

[0010] Furthermore, a guide platform is arranged on the outer side of the elastic arm.

[0011] Compared with the prior art, the beneficial technical effects of the utility model are:

[0012] The utility model condenser titanium tube jacket expander is different from the traditional clamping disassembly method. It makes full use of the reset characteristics of the elastic body and the special structural design, and changes the original jacket disassembly method of clamping and pulling force to an impact force from the inside to the outside. It does not need to be fixed during use, which saves a lot of time and greatly improves work efficiency. It reduces the operating steps of the tool, reduces the possibility of damage to the titanium tube during the use of the tool, and shortens the overhaul period. In short, the utility model condenser titanium tube jacket expander changes the original disassembly method, is simple and convenient to operate, will not damage the condenser titanium tube, is highly efficient, and greatly shortens the repair period. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model will be further described below in conjunction with the accompanying drawings.

[0014] Figure 1 This is the front view of the utility model condenser titanium tube sheath expander and puller;

[0015] Figure 2 This is a partial structural schematic diagram of the utility model condenser titanium tube sheath expander and puller;

[0016] Figure 3 Preparation for the expansion and extraction device to penetrate the sheath structure diagram;

[0017] Figure 4 This is a diagram showing the state of the expander being inserted into the sheath;

[0018] Figure 5 The diagram is a state diagram of the hook claws popping open after the expander is inserted into the sheath;

[0019] Figure 6 This is the state diagram of the expander when it passes through the titanium tube;

[0020] Figure 7 This is the state diagram of the expander after it passes through the titanium tube;

[0021] Figure 8 It is the diagram of the looseness and tightness change of the loose nut;

[0022] Fig. 9 It is a schematic diagram of the structure of a loose nut;

[0023] Description of reference numerals: 1. handle; 2. impact hammer; 3. connector; 4. loose nut; 5. sheath; 6. guide platform; 7. hook; 8. elastic arm; 9. arc boss; 10. tube sheet; 11. titanium tube;

[0024] 1-1, retaining ring;

[0025] 3-1, stud; 3-2, anti-rotation part;

[0026] 4-1. Bell mouth. DETAILED DESCRIPTION

[0027] like Figure 1-9 As shown, a condenser titanium tube sheath expander includes a connector 3, one end of which is detachably connected to a handle 1, a hammer 2 is slidably sleeved on the handle 1, a plurality of elastic arms 8 arranged in a ring are installed at the other end of the connector 3, the elastic arms 8 are connected to the connector 3 at one end close to the connector 3 through an arc-shaped boss 9 protruding outwards, and a barbed hook 7 is installed at the end of the elastic arm 8 away from the connector 3.

[0028] The end of the connector 3 away from the handle 1 is threadedly connected with a clamping nut 4, and the clamping nut 4 is installed with a bell mouth 4-1 at the end close to the arc-shaped boss 9 to facilitate squeezing the arc-shaped boss 9 and realize the change of the inner diameter size formed by the elastic arm 8.

[0029] The handle 1 is provided with a retaining ring 1 - 1 at one end away from the connecting head 3 , and the retaining ring 1 - 1 is limitedly matched with the impact hammer 2 .

[0030] The connector 3 is provided with a stud 3 - 1 at one end close to the handle 1 , and the stud 3 - 1 is threadedly connected to a reserved threaded hole on the handle 1 .

[0031] A polygonal anti-rotation portion 3-2, such as a hexagonal structure or a pentagonal structure, is installed at the connection position between the stud 3-1 and the connecting head 3.

[0032] A guide platform 6 is integrally formed on the outer side of the elastic arm 8 to play a role of guiding support.

[0033] Specifically, the elastic arm 8 is made of spring steel.

[0034] The action process of the utility model is as follows:

[0035] The first step is to put the impact hammer sleeve 2 on the handle 1, clamp the outer wall of the anti-rotation part 3-2 with a wrench or other tool to prevent the connector 3 from rotating, and connect the handle 1 and the connector 3 together;

[0036] The second step is to confirm that the loose nut 4 is in a loose position, that is, the bell mouth 4-1 and the arc-shaped boss 9 are in a loose contact state;

[0037] The third step is to insert the hook 7 into the sheath 5, and the outer diameter of the hook 7 is reduced under the pressure of the inner wall of the sheath 5 (such as Figure 3 As shown), until it enters the sheath 5, the hook 7 steadily moves inward along the sheath 5 to the outside of the sleeve end (as shown Figure 4 At this time, the hook 7 fits with the inner wall of the titanium tube 11 in the tube sheet 10 under the elastic action of the elastic arm 8, and the left side wall of the hook 7 contacts the end face of the sheath 5 (as shown in FIG. Figure 5 shown);

[0038] In the fourth step, the handle 1 is held by hand, and the hammer 2 is repeatedly slid and impacted. Under the guidance and support of the guide platform 6, the hook 7 drives the sheath 5 to move outward until it is completely disengaged (such as Figure 6 shown);

[0039] The fifth step is to clamp the outer wall of the anti-rotation part 3-2 with a wrench or other tool to prevent the connector 3 from rotating, and rotate and tighten the loose nut 4, that is, the bell mouth 4-1 and the arc-shaped boss 9 are in a state of extrusion contact, so that the inner diameter formed between the elastic arms 8 shrinks, and then the hook 7 shrinks, so that the hook 7 can be withdrawn from the sheath 5 (such as Figure 7 shown);

[0040] Step 6: loosen the tension nut 4, and the hook 7 automatically rebounds under the elastic action of the elastic arm 8. Repeat the above steps to disassemble the next sheath 5.

[0041] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A condenser titanium tube sheath expander, characterized in that: The invention comprises a connecting head (3), one end of which is detachably connected to a handle (1), an impact hammer (2) is slidably sleeved on the handle (1), a plurality of elastic arms (8) arranged in a ring shape are arranged at the other end of the connecting head (3), the elastic arm (8) is connected to the connecting head (3) at an end close to the connecting head (3) through an arc-shaped boss (9) protruding outwards, and a barbed hook (7) is arranged at an end of the elastic arm (8) away from the connecting head (3); A clamping nut (4) is threadedly connected to one end of the connector (3) away from the handle (1), and a bell mouth (4-1) is provided at one end of the clamping nut (4) close to the arc-shaped boss (9).

2. The condenser titanium tube sheath expander according to claim 1, characterized in that: The handle (1) is provided with a retaining ring (1-1) at one end away from the connecting head (3), and the retaining ring (1-1) is limitedly matched with the impact hammer (2).

3. The condenser titanium tube sheath expander and puller according to claim 2, characterized in that: The connector (3) is provided with a stud (3-1) at one end close to the handle (1), and the stud (3-1) is threadedly connected to a reserved threaded hole on the handle (1).

4. The condenser titanium tube sheath expander and puller according to claim 3, characterized in that: A polygonal anti-rotation portion (3-2) is provided at the connection position between the stud (3-1) and the connecting head (3).

5. The condenser titanium tube sheath expander and puller according to claim 1, characterized in that: A guide platform (6) is arranged on the outer side of the elastic arm (8).

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