Anti-vibration strip suitable for condenser and adding device

Abstract

The utility model discloses an anti-vibration strip suitable for a condenser and an adding device, the anti-vibration strip comprises a body and a traction wire, the traction wire is embedded in the body, extends outwards and is used for pulling the body to move through the traction wire, and the extension direction of the traction wire is the same as the length direction of the body. According to the anti-vibration strip suitable for the condenser, due to the arrangement of the traction wire, when the anti-vibration strip is inserted into a pipe, a deeper insertion depth can be achieved by pulling the traction wire, the problems that a traditional plastic anti-vibration strip is squeezed and curled by a pipe bundle, and consequently jamming and large resistance are caused in the installation process are effectively solved, and the installation efficiency of the anti-vibration strip is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of condensers, in particular to a novel condenser inter-tube anti-vibration strip and an installation device for installing the same between condenser tube bundles. Background Art

[0002] The condenser is a heat exchanger that condenses the exhaust steam of the steam turbine into water. The cooling tube bundle is a key sensitive component of the condenser. Since the support plates on both sides of the cooling tube have a large span, and during operation, sudden changes in operating conditions will cause long-term vibration or excitation, which will aggravate the friction between the titanium tubes, causing wear and even leakage of the titanium tubes.

[0003] Practice has proved that adding plastic anti-vibration strips between condenser titanium tubes can, to a certain extent, shorten the span of the support plates on both sides, which can effectively reduce the vibration of the titanium tubes. The existing automatic installation technology of condenser anti-vibration strips is to use the installation equipment to clamp and drive the anti-vibration strips, and push the anti-vibration strips into the corresponding position between the tubes according to the position between the heat transfer tubes to be installed. However, since the gap between the tube bundles of the installation channel is about 2.2mm, which is smaller than the overall thickness of the vacuum before the installation of the anti-vibration strips (2.5mm), and the anti-vibration strips are relatively flexible, they are easily squeezed and curled by the tube bundles during the installation and insertion process, and problems such as jamming and high resistance will occur during the insertion process, which limits the depth of the anti-vibration strips installed between the tubes. Utility Model Content

[0004] In view of this, in order to overcome the defects of the prior art, an object of the present invention is to provide an improved anti-vibration strip, which can further increase the insertion depth of the anti-vibration strip.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A vibration-proof strip suitable for a condenser comprises a body and a traction wire, wherein the traction wire is embedded in the body and extends outwards, and is used to pull the body to move by the traction wire, and the extension direction of the traction wire is the same as the length direction of the body.

[0007] According to some preferred implementation aspects of the utility model, the main body has a cavity, both ends of the cavity are closed, and the traction wire is inserted into the cavity from one end of the main body.

[0008] According to some preferred implementation aspects of the utility model, one end of the traction wire located in the cavity has a blocking portion, and the size of the blocking portion is larger than the cross-sectional size of the traction wire to prevent the traction wire from detaching from the anti-vibration strip body.

[0009] According to some preferred implementation aspects of the utility model, the traction wire is a nickel-titanium wire. The nickel-titanium wire has high rigidity and good shape memory performance, can store large elastic energy when deformed, and quickly return to its original shape after the external force is removed.

[0010] According to some preferred implementation aspects of the utility model, the length of the traction wire extending outward from the end of the body is 0.3-1.5m, preferably 0.5-1m, which basically covers the depth between pipes in actual application occasions.

[0011] The utility model also provides a device for installing an anti-vibration strip, comprising a pushing mechanism and a pulling mechanism, wherein the pushing mechanism is used to feed the anti-vibration strip as described above inwardly on one side of the condenser tube room, and the pulling mechanism is used to clamp the traction wire on the corresponding other side and pull it outward; the pulling mechanism comprises a guide rail, a pulling clamp and a driving assembly for driving the pulling clamp to move along the guide rail.

[0012] According to some preferred implementation aspects of the utility model, a connecting slider is provided between the pulling clamp and the guide rail.

[0013] According to some preferred implementation aspects of the utility model, the driving assembly includes a synchronous belt and a driver for driving the synchronous belt to rotate, and the connecting slider is fixedly connected to the synchronous belt. The synchronous belt is driven by the driver to move, which drives the connecting slider and the pulling clamp to move, thereby achieving the pulling of the traction wire.

[0014] According to some preferred implementation aspects of the utility model, a roller is provided at the end of the guide rail, and a receiving groove for receiving the traction wire is opened on the circumference of the roller, thereby avoiding damage caused by interference between the traction wire and the guide rail.

[0015] According to some preferred implementation aspects of the utility model, the pulling mechanism includes a shearing unit for shearing the anti-vibration strip, and is used for shearing the anti-vibration strip after the anti-vibration strip is inserted into place.

[0016] According to some preferred implementation aspects of the utility model, the vertical plane where the pulling clamp is located is perpendicular to the support plate of the condenser, that is, the finger clamping movement direction of the pulling clamp is parallel to the length direction of the tube bundle and perpendicular to the support plate.

[0017] Due to the adoption of the above technical scheme, compared with the prior art, the benefits of the utility model are as follows: the anti-vibration strip of the utility model suitable for the condenser can achieve a deeper insertion depth by pulling the traction wire when the anti-vibration strip is inserted between the tubes, thereby effectively solving the problem of jamming and high resistance caused by the traditional plastic anti-vibration strip being squeezed and curled by the tube bundle during installation, thereby improving the efficiency of the installation of the anti-vibration strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a preferred embodiment of the utility model before one end of the anti-vibration strip is closed;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure after both ends of the anti-vibration strip in the preferred embodiment of the utility model are completely closed;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the drawing mechanism in the preferred embodiment of the utility model;

[0022] Figure 4 It is a top view schematic diagram of the installation device in the preferred embodiment of the utility model when it is working;

[0023] In the attached drawings, 1. anti-vibration strip; 2. traction wire; 3. support plate; 4. pushing mechanism; 5. pulling clamp; 6. connecting slider; 7. guide rail; 8. synchronous belt. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] Most existing condensers are horizontal structures, with tens of thousands of tube bundles distributed in an equilateral triangle, and the visible distance between tubes is only 2.2mm; the thickness of the anti-vibration strip after vacuuming is 2.5mm, which is larger than the gap between the tube bundles. When the anti-vibration strip is inserted into the gap between the tube bundles, it will be subjected to a large reaction force, which is easy to cause the anti-vibration strip to curl, thereby limiting the depth of the anti-vibration strip installed into the tube gap. The anti-vibration strip and the corresponding installation device provided by the utility model can solve the problem of traditional plastic anti-vibration strips being squeezed and curled by the tube bundles due to their large flexibility, causing jamming and insertion obstruction during installation, effectively increasing the depth of the anti-vibration strip installed into the tube gap, and improving the efficiency of anti-vibration strip installation.

[0026] Example 1 Anti-vibration strip 1

[0027] like Figure 1-2 As shown, the anti-vibration strip 1 for condensers in this embodiment includes a body and a traction wire 2. The body has a cavity, both ends of the cavity are closed, and the traction wire 2 is inserted into the cavity from one end of the body. The traction wire 2 is embedded in the body and extends outward, and is used to pull the body to move through the traction wire 2. The extension direction of the traction wire 2 is the same as the length direction of the body. The length of the traction wire 2 extending outward from the end of the body is 0.3-1.5m, preferably 0.5-1m, which can cover the depth between pipes in actual application occasions.

[0028] The traction wire 2 is a nickel-titanium wire with a diameter of less than 1 mm. The nickel-titanium wire has high stiffness and good shape memory properties. It can store a large amount of elastic energy when deformed and quickly return to its original shape after the external force is removed. One end of the traction wire 2 located in the cavity has a blocking portion, and the size of the blocking portion is larger than the cross-sectional size of the traction wire 2 to prevent the traction wire 2 from detaching from the anti-vibration strip 1 body. The blocking portion in this embodiment is a disc, which can be extended into the cavity or pressed on the closed end of the body.

[0029] Example 2: Adding device

[0030] This embodiment provides an installation device suitable for the above-mentioned anti-vibration strip 1, including a pushing mechanism 4 and a pulling mechanism. The pushing mechanism 4 is used to push the above-mentioned anti-vibration strip 1 inward on one side of the condenser tube room, and the pulling mechanism is used to clamp the traction wire 2 on the corresponding other side and pull it outward.

[0031] Among them, the pushing mechanism 4 adopts the existing structure in the prior art. The pulling mechanism includes a guide rail 7, a pulling jaw 5, a connecting slider 6 arranged between the pulling jaw 5 and the guide rail 7, a driving component for driving the pulling jaw 5 to move along the guide rail 7, and a shearing unit (not shown) for cutting. The shearing unit can be the shearing unit in the existing pushing mechanism 4. The pulling mechanism in this embodiment drives the pulling jaw 5 to align between the pipes through the driving component, and uses the pulling jaw 5 to clamp the metal wire. The synchronous belt 8 on the guide rail 7 moves to drive the connecting slider 6 and the pulling jaw 5 to move, so as to achieve one side pushing the insertion between the pipes while pulling the metal wire to make the insertion depth of the anti-vibration strip reach the right level; the pulling jaw 5 is preferably driven by electricity.

[0032] The driving assembly includes a synchronous belt 8 and a driver (not shown) for driving the synchronous belt 8 to rotate, and the connecting slider 6 is fixedly connected to the synchronous belt 8. The synchronous belt 8 is driven by the driver to move, which drives the connecting slider 6 and the pulling clamp 5 to move, thereby realizing the pulling of the traction wire 2. A roller (not shown) is provided at the end of the guide rail 7, and a receiving groove for receiving the traction wire 2 is opened on the circumference of the roller, thereby avoiding damage caused by interference between the traction wire 2 and the guide rail 7.

[0033] During actual installation and use, the vertical plane where the pulling clamp 5 is located is perpendicular to the support plate 3 of the condenser, that is, the clamping movement direction of the fingers of the pulling clamp 5 is parallel to the length direction of the tube bundle and perpendicular to the support plate 3 .

[0034] The working process of the installation device in this embodiment is as follows:

[0035] First, fix the pushing mechanism 4 and the pulling mechanism on the supporting plate 3 .

[0036] The end of the vibration-proof strip 1 equipped with the nickel-titanium wire is inserted into the pushing mechanism 4 as the front end, and the pushing mechanism 4 drives the vibration-proof strip 1 to make the front end of the wire slightly leak out.

[0037] The metal wire is positioned perpendicular to the tube to be inserted through the pushing mechanism 4, and the anti-vibration strip 1 is driven into the tube until the metal wire extends out from the other end of the tube.

[0038] The pulling mechanism is operated to align with the other side of the tube to be inserted, and the extended nickel-titanium wire is clamped by the pulling jaw 5. The synchronous belt 8 is driven to drive the connecting slider 6 and the pulling jaw 5 to move backward along the guide rail 7 to pull out the wire until the main body of the plastic anti-vibration strip 1 extends out from the side tube.

[0039] The shearing unit is used to shear the end of the vibration-proof strip 1 with the nickel-titanium wire, and the nickel-titanium wire and the pressed part with the vibration-proof strip 1 are sheared off and clamped by the drawing mechanism and then recovered. At this point, the installation of an inter-tube vibration-proof strip 1 is completed.

[0040] Insert a new anti-vibration strip 1 on the pushing mechanism 4 to insert the next tube, and repeat the above steps until the installation of the anti-vibration strips 1 in all the tubes to be inserted is completed.

[0041] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A vibration-proof strip suitable for a condenser, characterized in that: It comprises a body and a traction wire, wherein the traction wire is embedded in the body and extends outwards, and is used for pulling the body to move by the traction wire, and the extension direction of the traction wire is the same as the length direction of the body.

2. The anti-vibration strip according to claim 1, characterized in that: The main body has a cavity, both ends of the cavity are closed, and the traction wire is inserted into the cavity from one end of the main body.

3. The anti-vibration strip according to claim 2, characterized in that: One end of the traction wire located in the cavity has a blocking portion, and the size of the blocking portion is larger than the cross-sectional size of the traction wire.

4. The anti-vibration strip according to claim 1, characterized in that: The traction wire is a nickel-titanium wire.

5. The anti-vibration strip according to any one of claims 1 to 4, characterized in that: The length of the traction wire extending outward from the end of the body is 0.3-1.5m.

6. A device for installing an anti-vibration strip, characterized in that: It comprises a pushing mechanism and a pulling mechanism, wherein the pushing mechanism is used to feed the anti-vibration strip as described in any one of claims 1 to 5 inwardly on one side of the condenser tube room, and the pulling mechanism is used to clamp the traction wire on the other corresponding side and pull it outwardly; the pulling mechanism comprises a guide rail, a pulling clamp and a driving assembly for driving the pulling clamp to move along the guide rail.

7. The mounting device according to claim 6, characterized in that: A connecting slider is arranged between the pulling clamp and the guide rail.

8. The mounting device according to claim 7, characterized in that: The driving assembly comprises a synchronous belt and a driver for driving the synchronous belt to rotate, and the connecting slider is fixedly connected to the synchronous belt.

9. The mounting device according to claim 6, characterized in that: A roller is disposed at the end of the guide rail, and a receiving groove for receiving the traction wire is opened on the circumference of the roller.

10. The mounting device according to claim 6, characterized in that: The pulling mechanism includes a shearing unit for shearing the anti-vibration strip.

Images