Heater heat exchange tube and tube plate connecting structure

Abstract

The utility model relates to the technical field of heat exchange tube and tube plate connecting structures, and discloses a heater heat exchange tube and tube plate connecting structure which comprises a plurality of tube bodies, two sets of plate bodies and two sets of fixing plates, the tube bodies penetrate through the front portions and the rear portions of the fixing plates, and a plurality of sets of limiting assemblies are arranged on the front portions of the plate bodies. The limiting assembly comprises a limiting ring, a limiting sleeve, a spring and a connecting base, one end of the spring is fixedly connected with the limiting sleeve, the other end of the spring is fixedly connected with the connecting base, a plurality of limiting teeth are arranged outside the limiting ring, a plurality of tooth grooves are formed in the inner side of the limiting sleeve, and the limiting teeth are matched with the tooth grooves; one group of limiting rings, two groups of limiting sleeves, two groups of springs and two groups of connecting seats of one group of limiting assembly are arranged, and the two groups of limiting sleeves, the two groups of springs and the two groups of connecting seats are symmetrically arranged; the limiting ring is located at the end of the pipe body, and the limiting ring is in threaded connection with the pipe body. And by arranging the limiting assemblies, connection between the pipe bodies and the plate bodies is more stable, and heat exchange is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchange pipe and pipe plate connecting structure technical field, concretely is a kind of heater heat exchange pipe and pipe plate connecting structure. BACKGROUND

[0002] High-pressure heater is under variable load condition, due to the sharp change of inlet steam temperature, the expansion coefficient of heat exchange tube, cylinder, tube sheet, support plate is inconsistent, generate larger thermal stress, this phenomenon is inevitable, only select the performance of tube bundle material, reasonable structure and advanced production process to offset the influence of thermal stress, to meet the variable load condition of unit;

[0003] Chinese patent provides a kind of heat exchange pipe and pipe plate's connecting structure, publication number is CN217330864U, including heat exchange pipe and pipe plate, the pipe plate has tube hole, the heat exchange pipe includes small diameter section, arc variable diameter section, large diameter section and flared section in turn, the small diameter section and arc variable diameter section are all set in tube hole and have gap with tube hole, the tube hole has annular groove, the large diameter section is connected in tube hole by annular groove and is attached with tube hole, the flared section is trumpet mouth shape, the end of the flared section with small caliber is connected in tube hole and is attached with tube hole, another end of the flared section extends tube hole.

[0004] The above structure has the effect of improving sealing performance and increasing the fitting length of heat exchange pipe and pipe plate including tube hole, but when heat exchange is carried out using heat exchange pipe, there is no connection relationship between tube body and plate body, and there is a possibility of loosening between tube body and plate body after long-term use, therefore a kind of heater heat exchange pipe and pipe plate connecting structure is proposed. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of heater heat exchange pipe and pipe plate connecting structure to solve the effect that there is no connecting structure between existing tube body and plate body, so that the connection between tube body and plate body is unstable.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of heater heat exchange pipe and pipe plate connecting structure, including several tube bodies, two groups of plate bodies and two groups of fixed plates, several the tube body penetrates the front and rear parts of fixed plate, the front part of plate body is provided with several groups of limiting components, limiting component includes limiting ring, limiting sleeve, spring, connecting seat, spring one end and limiting sleeve are fixedly connected, spring other end and connecting seat are fixedly connected, limiting ring outside is provided with several limiting teeth, several tooth grooves are set in the inner side of limiting sleeve, and limiting tooth and tooth groove are adapted.

[0007] Preferably, the limiting ring of one group of the limiting component is provided with a group, the limiting sleeve, spring and connecting seat are provided with two groups, and the two groups of limiting sleeve, spring and connecting seat are symmetrically arranged.

[0008] Preferably, the limiting ring is located at the end of the tube body, and the limiting ring is threadedly connected to the tube body.

[0009] Preferably, four groups of slots are opened through the front and rear parts of the fixing plate, and four groups of threaded rods are provided at the front part of the plate body. The threaded rods are adapted to the slots, and nuts are threadedly connected to the front ends of the threaded rods.

[0010] Preferably, a plurality of limiting grooves are provided through the front and rear parts of the fixing plate, and the limiting grooves are located inside the slots.

[0011] Preferably, a plurality of fixing grooves are provided through the rear portion of the fixing plate, and the fixing grooves are located behind the limiting grooves.

[0012] Preferably, the limiting groove and the fixing groove are adapted to the limiting assembly.

[0013] Preferably, the two groups of fixing plates are located outside the two groups of plate bodies, and the plurality of tubes are located outside the two groups of fixing plates and the two groups of plate bodies.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1) The connection structure between the heat exchange tube and the tube sheet is provided with a limit assembly, so that the connection between the tube body and the plate body can be more stable. When in use, first insert the tube body into the plate body and then tighten the limit ring on the end of the tube body. Then align the limit teeth of the limit ring with the tooth groove and insert it. After insertion, the spring will apply pressure to the limit sleeve, so that the limit sleeve will clamp the limit ring.

[0016] 2) The heat exchange tube and tube sheet connection structure can further fix the limit sleeve by setting a fixing plate. When in use, directly align the threaded rod with the slot and insert it, and then use the nut to limit the fixing plate. The limit groove and the fixing groove will limit the limit assembly and the limit sleeve, making the whole more stable and firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the disassembly of the utility model;

[0019] Figure 3 This is a schematic structural diagram of the limit assembly of the present utility model;

[0020] Figure 4 For the utility model Figure 2 Another side view.

[0021] In the figure: 1, pipe body; 2, plate body; 3, fixed plate; 4, limiting groove; 5, threaded rod; 6, nut; 7, insertion slot; 8, limiting ring; 9, limiting sleeve; 10, limiting teeth; 11, tooth groove; 12, spring; 13, connecting seat; 14, fixed groove; 15, limiting assembly. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Embodiment one

[0024] In combination with Figure 1 - Figure 4 A kind of heater heat exchange tube and pipe plate connecting structure, including several pipe bodies 1, two groups of plate bodies 2 and two groups of fixed plates 3, several pipe bodies 1 are through fixed plate 3 front and rear parts.

[0025] Referring to Figure 2 And Figure 3 Further, the front part of the plate body 2 is provided with a plurality of limiting assemblies 15, the limiting assembly 15 includes a limiting ring 8, a limiting sleeve 9, a spring 12, a connecting seat 13, one end of the spring 12 is fixedly connected with the limiting sleeve 9, the other end of the spring 12 is fixedly connected with the connecting seat 13, the limiting ring 8 is provided with a plurality of limiting teeth 10 outside, the inside of the limiting sleeve 9 is provided with a plurality of tooth grooves 11, and the limiting teeth 10 are matched with the tooth grooves 11;The limiting ring 8 of one limiting assembly 15 is provided with a group, the limiting sleeve 9, the spring 12 and the connecting seat 13 are provided with two groups, and the two groups of limiting sleeve 9, spring 12 and connecting seat 13 are symmetrically arranged;The limiting ring 8 is located at the end of the pipe body 1, and the limiting ring 8 is threadedly connected with the pipe body 1.

[0026] Specifically, by setting the limiting assembly, the pipe body 1 can be connected more stably with the plate body 2, in use, first, the pipe body 1 is inserted through the plate body 1, then the limiting ring 8 is tightened with the pipe body 1, and then the limiting teeth 10 outside the limiting ring 8 are aligned with the tooth grooves 11 in the limiting sleeve 9, the spring 12 presses the limiting sleeve 9 to tightly clamp the limiting ring 8, so that the pipe body 1 cannot rotate.

[0027] Embodiment two

[0028] Referring to Figure 4, and on the basis of Example 1, it is further obtained that four groups of slots 7 are opened through the front and rear parts of the fixing plate 3, four groups of threaded rods 5 are provided on the front part of the plate body 2, the threaded rods 5 are adapted to the slots 7, and the front ends of the threaded rods 5 are threadedly connected with nuts 6; a number of limiting slots 4 are opened through the front and rear parts of the fixing plate 3, and the limiting slots 4 are located on the inner side of the slots 7; a number of fixing slots 14 are opened through the rear part of the fixing plate 3, and the fixing slots 14 are located behind the limiting slots 4; the limiting slots 4 and the fixing slots 14 are adapted to the limiting components 15; the two groups of fixing plates 3 are located outside the two groups of plate bodies 2, and the several tube bodies 1 are located outside the two groups of fixing plates 3 and the two groups of plate bodies 2.

[0029] Specifically, by setting the fixing plate 3, the connection between the tube body 1 and the plate body 2 can be more stably made. When in use, the threaded rod 5 is directly inserted into the slot 7 and then limited by the nut 6. The limiting groove 4 and the fixing groove 14 will limit the limiting assembly 15, so that the limiting sleeve 9 can also fix the limiting ring 8 more firmly.

[0030] During actual operation, insert the two ends of the tube body 1 into the plate body 2 respectively, and then tighten the limiting sleeves 9 at both ends of the tube body 1. After tightening, align the limiting teeth 10 of the limiting rings 8 at both ends of the tube body 1 with the tooth grooves 11 of the limiting sleeves 9 and insert them. The spring 12 will continue to apply force to the limiting sleeves 9 so that the limiting sleeves 9 can clamp the limiting rings 8. Then, follow this operation to fix several tube bodies 1 and the plate body 2, and then align the fixing plate 3 with the threaded rod 5 and insert it. The limiting groove 4 and the fixing groove 14 of the fixing plate 3 will further limit the limiting component 15 so that the tube body 1 and the plate body 2 are fixed more firmly. Finally, tighten the nut 6.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood 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 the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heater heat exchange tube and tube plate connection structure, comprising a plurality of tube bodies (1), two groups of plate bodies (2) and two groups of fixed plates (3), wherein the plurality of tube bodies (1) pass through the front and rear parts of the fixed plates (3), and is characterized in that: The front part of the plate body (2) is provided with a plurality of groups of limiting components (15), the limiting components (15) include a limiting ring (8), a limiting sleeve (9), a spring (12), and a connecting seat (13), one end of the spring (12) is fixedly connected to the limiting sleeve (9), and the other end of the spring (12) is fixedly connected to the connecting seat (13), a plurality of limiting teeth (10) are provided on the outside of the limiting ring (8), a plurality of tooth grooves (11) are provided on the inside of the limiting sleeve (9), and the limiting teeth (10) are adapted to the tooth grooves (11).

2. The heater heat exchange tube and tube sheet connection structure according to claim 1, characterized in that: A set of limiting rings (8) of the limiting assembly (15) is provided in one group, and two sets of limiting sleeves (9), springs (12), and connecting seats (13) are provided. The two sets of limiting sleeves (9), springs (12), and connecting seats (13) are symmetrically arranged.

3. The heater heat exchange tube and tube sheet connection structure according to claim 2, characterized in that: The limiting ring (8) is located at the end of the tube body (1), and the limiting ring (8) and the tube body (1) are threadedly connected.

4. The heater heat exchange tube and tube sheet connection structure according to claim 1, characterized in that: Four groups of slots (7) are provided through the front and rear parts of the fixing plate (3), and four groups of threaded rods (5) are provided at the front part of the plate body (2). The threaded rods (5) are adapted to the slots (7), and the front ends of the threaded rods (5) are threadedly connected with nuts (6).

5. The heater heat exchange tube and tube sheet connection structure according to claim 4, characterized in that: A plurality of limiting grooves (4) are provided through the front and rear parts of the fixing plate (3), and the limiting grooves (4) are located inside the slots (7).

6. The heater heat exchange tube and tube sheet connection structure according to claim 5, characterized in that: A plurality of fixing grooves (14) are provided through the rear portion of the fixing plate (3), and the fixing grooves (14) are located at the rear portion of the limiting groove (4).

7. The heater heat exchange tube and tube sheet connection structure according to claim 6, characterized in that: The limiting groove (4) and the fixing groove (14) are adapted to the limiting assembly (15).

8. The heater heat exchange tube and tube sheet connection structure according to claim 1, characterized in that: The two groups of fixed plates (3) are located outside the two groups of plate bodies (2), and the plurality of tube bodies (1) are located outside the two groups of fixed plates (3) and the two groups of plate bodies (2).

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