Expansion joint for high-back-pressure condenser
By designing the expansion joint structure of the flange, protective plate, fixing ring and slider with mirrored settings, the problems of fragility and excessive expansion and contraction of the corrugated tube in the middle of the expansion joint of the high back pressure condenser are solved, and the corrugated tube is realized. Effective protection and limiting extend service life.
Patent Information
- Application Number
- CN202421469504.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The corrugated tube in the middle of the expansion joint of the existing high back pressure condenser is relatively fragile and is prone to damage due to collisions and is not limited, resulting in excessive shrinkage or expansion damage.
An expansion joint structure including a mirrored flange, protective plate, fixing ring and slider is designed. Through the distribution of the second and third springs and the arrangement of limit beads, the protection and limiting of the bells are achieved. , avoid excessive expansion or contraction.
It effectively protects the corrugated pipe in the middle of the expansion joint, avoids damage caused by bumps or excessive expansion and contraction, and extends the service life of the expansion joint.
Smart Images
Figure CN222503111U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of condensers, and in particular to an expansion joint for a high back pressure condenser. Background Art
[0002] At present, when the steam turbine generates electricity, the steam of the condensing steam turbine is discharged into the condenser after doing work in the cylinder, and exchanges heat with the circulating water in the shell cooling pipe, which makes the condenser temperature rise. Due to the different materials of the cooling pipe and the shell, there will be a certain thermal expansion difference between the two. The high back pressure condenser must consider the safety hazards caused by thermal expansion. One of the effective methods is to install a corrugated expansion joint to make the condenser operation safer and more reliable.
[0003] However, the bellows in the middle of the existing expansion joint is relatively fragile and can be easily damaged after being bumped, resulting in damage to the expansion joint. The expansion joint needs to be replaced, and the existing expansion joint is not limited, resulting in excessive contraction or expansion, which may damage the expansion joint. Utility Model Content
[0004] In response to the above problems, the present application provides an expansion joint for a high back-pressure condenser, which can solve the problem that the bellows in the middle of the existing expansion joint is relatively fragile and will be damaged after being bumped, and the existing expansion joint is not limited, resulting in excessive contraction or expansion that may cause damage to the expansion joint.
[0005] To achieve the purpose of this application, this application provides the following technical solutions:
[0006] The present application provides an expansion joint for a high back pressure condenser, comprising: two mirror-image flanges, a protection plate, and a fixing ring;
[0007] The two sets of fixing rings are respectively connected in mirror-image sliding manner with the middle parts of the opposite sides of the two flanges through sliding blocks fixedly installed in the middle parts of the opposite back surfaces;
[0008] Both sides of the two protection plates are connected to the opposite sides of the two groups of fixing rings through a plurality of evenly distributed second springs, and the opposite sides are fixedly provided with a plurality of evenly distributed third springs.
[0009] In a possible implementation, fixing blocks are fixedly installed on both sides of the two flanges, screws are provided in the middle of the four fixing blocks, and nuts are threadedly installed on both ends of the four screws.
[0010] In a possible implementation, four mirror-distributed sliding grooves are provided on opposite sides of the two flanges, and the four sliding blocks are slidably mounted inside the sliding grooves.
[0011] In a possible implementation, two groups of mirror-distributed grooves are provided on opposite sides of the two flanges, first springs are fixedly disposed inside the four grooves, and limiting beads are fixedly disposed on one side of the four groups of the first springs.
[0012] In a possible implementation, the four sliding blocks are provided with limiting grooves on opposite sides thereof, and the four groups of limiting beads are slidably clamped inside the limiting grooves.
[0013] In a possible implementation manner, second bellows are fixedly mounted on opposite sides of the four screw rods.
[0014] In a possible implementation, a mounting hole is formed in the middle of each of the four fixing blocks, and the middle of each of the four screw rods slides through the mounting hole.
[0015] In a possible implementation manner, a first bellows is fixedly installed at the middle of opposite sides of the two flanges.
[0016] Compared with the prior art, the beneficial effects of this application are:
[0017] 1. The present application can protect the bellows in the middle of the expansion joint to avoid damage caused by collisions, which requires replacement and prolongs the service life of the expansion joint.
[0018] 2. This application can protect the expansion joint to avoid damage to the expansion joint due to excessive expansion or contraction. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are used to provide further understanding of the present application and form a part of the specification. They are used to explain the present application together with the embodiments of the present application and do not constitute a limitation of the present application.
[0020] Figure 1 A schematic diagram of the overall structure of an expansion joint for a high back pressure condenser provided in an embodiment of the present application;
[0021] Figure 2 A schematic cross-sectional view of an expansion joint for a high back pressure condenser provided in an embodiment of the present application;
[0022] Figure 3 A schematic diagram of a partial cross-sectional structure of an expansion joint for a high back-pressure condenser provided in an embodiment of the present application;
[0023] Figure 4 For this application Figure 3 A schematic diagram of the enlarged structure at A in the middle;
[0024] Figure 5 A schematic diagram of the structure of a disassembled expansion joint for a high back-pressure condenser provided in an embodiment of the present application.
[0025] Reference numerals:
[0026] 1-flange; 11-slide; 12-first spring; 121-slot body; 13-limiting bead; 14-fixing block; 141-mounting hole; 15-first bellows; 2-screw; 21-second bellows; 22-nut; 3-protective plate; 31-second spring; 32-third spring; 33-fixing ring; 34-slider; 341-limiting groove. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0028] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of this application, unless otherwise specified, "plurality" means two or more.
[0029] Example 1
[0030] Figure 1-4 An expansion joint for a high back pressure condenser provided in an embodiment of the present application comprises: two mirror-image flanges 1, a protection plate 3, and a fixing ring 33;
[0031] The two sets of fixing rings 33 are respectively connected to the middle of the opposite sides of the two flanges 1 in a mirror-image sliding manner through a sliding block 34 fixedly installed in the middle of the opposite back sides;
[0032] Both sides of the two protection plates 3 are connected to the opposite sides of the two groups of fixing rings 33 through a plurality of evenly distributed second springs 31 , and a plurality of evenly distributed third springs 32 are fixedly arranged on the opposite sides.
[0033] In a possible implementation manner, fixing blocks 14 are fixedly installed on both sides of the two flanges 1, screw rods 2 are provided in the middle of the four fixing blocks 14, and nuts 22 are threadedly installed on both ends of the four screw rods 2.
[0034] In a possible implementation manner, four mirror-distributed slide grooves 11 are provided on opposite sides of the two flanges 1 , and the four sliding blocks 34 are slidably mounted inside the slide grooves 11 .
[0035] In a possible implementation, two groups of mirror-distributed grooves 121 are provided on opposite sides of the two flanges 1, a first spring 12 is fixedly disposed inside the four grooves 121, and a limiting bead 13 is fixedly disposed on one side of the four groups of the first springs 12.
[0036] In a possible implementation manner, the four sliders 34 are each provided with a limiting groove 341 on opposite sides thereof, and the four groups of limiting beads 13 are all slidably clamped inside the limiting groove 341 .
[0037] In a possible implementation manner, second corrugated tubes 21 are fixedly mounted on opposite sides of the four screw rods 2 .
[0038] In a possible implementation manner, a mounting hole 141 is formed in the middle of each of the four fixing blocks 14 , and the middle of each of the four screw rods 2 slides through the mounting hole 141 .
[0039] In a possible implementation manner, a first bellows 15 is fixedly installed at the middle of opposite sides of the two flanges 1 .
[0040] Example 2
[0041] On the basis of the aforementioned embodiments, the embodiments of the present application also provide a detailed expansion joint for a high back-pressure condenser, comprising: a flange 1, wherein the flange 1 is provided with two mirror-distributed ones, two groups of mirror-distributed fixing rings 33 are provided in the middle of opposite sides of the two flanges 1, a plurality of evenly distributed second springs 31 are fixedly installed on opposite sides of the two groups of fixing rings 33, a protective plate 3 is fixedly installed on opposite sides of the two groups of second springs 31, a plurality of evenly distributed third springs 32 are fixedly installed on opposite sides of both ends of the two protective plates 3, a slider 34 is fixedly installed in the middle of opposite ends of the two groups of fixing rings 33, two groups of mirror-distributed first springs 12 are provided on one side of the two flanges 1, and limiting beads 13 are fixedly installed on one side of the four groups of first springs 12.
[0042] Fixing blocks 14 are fixedly installed on both sides of the two flanges 1 , screw rods 2 are arranged in the middle of the four fixing blocks 14 , and nuts 22 are threadedly installed on both ends of the four screw rods 2 .
[0043] Four mirror-distributed slide grooves 11 are provided on opposite sides of the two flanges 1, and four sliders 34 are slidably mounted inside the slide grooves 11. By setting the slide grooves 11 and sliding the sliders 34 inside the slide grooves 11, the structure is made more stable.
[0044] Two sets of mirror-distributed grooves 121 are provided on one side of the two flanges 1, and the four sets of first springs 12 are fixedly installed inside the grooves 121. By setting the grooves 121, when the limiting beads 13 are squeezed, the limiting beads 13 will slide into the grooves 121, thereby facilitating the sliding block 34 to slide inside the slide groove 11.
[0045] The four sliders 34 are provided with limiting grooves 341 on the opposite sides thereof, and the four groups of limiting beads 13 are slidably clamped in the limiting grooves 341. By setting the limiting grooves 341 and clamping the limiting beads 13 in the limiting grooves 341, the sliders 34 are limited and fixed, that is, the protective plate 3 is limited and fixed. When disassembling, the fixing ring 33 is directly pulled to separate the limiting beads 13 from the limiting grooves 341, so that it is disassembled, thereby facilitating the installation and disassembly of the protective plate 3.
[0046] The second bellows 21 are fixedly installed on the opposite sides of the four screw rods 2. By setting the second bellows 21, the screw rods 2 can be connected with each other and have toughness to ensure that the first bellows 15 can work normally.
[0047] The four fixing blocks 14 are each provided with a mounting hole 141 in the middle, and the four screw rods 2 are each slidably passed through the mounting hole 141 in the middle. By setting the mounting hole 141, after the screw rod 2 passes through the mounting hole 141, the fixing block 14 can slide on the outer surface of the screw rod 2.
[0048] A first bellows 15 is fixedly installed in the middle of the opposite sides of the two flanges 1. By setting the first bellows 15, after the first bellows 15 and the flange 1 are installed with each other, they can be connected to the pipeline through mutual cooperation, ensuring that the pipeline can be buffered by the first bellows 15 when deformation occurs.
[0049] Working principle: In actual use, by inserting the slider 34 installed on one side of the fixing ring 33 into the sliding groove 11, the limiting bead 13 is squeezed, and the limiting bead 13 moves toward the inside of the groove body 121, thereby squeezing the first spring 12, so that the first spring 12 generates tension. When the slider 34 continues to move downward and reaches the specified position, the limiting groove 341 is located in front of the limiting bead 13, so that the limiting bead 13 is ejected under the reaction force of the first spring 12, so that it is stuck in the limiting groove 341, and then the slider 34 is limited, so that the protection plate 3 is limited and fixedly installed, and the fixing ring 33 and the protection plate 3 are connected to each other by the second spring 31, so that when the first bellows 15 expands or contracts, the buffering of the second spring 31 can be used to ensure that the first bellows 15 can work normally, wherein the third spring 32 is in contact with the outer surface of the first bellows 15, so that when the protection plate 3 is hit, it can be buffered by the second spring 31;
[0050] By sliding the screw 2 through the fixed block 14 and installing the nut 22 at both ends of the screw 2, maintaining a certain safety distance from the fixed block 14, when the first bellows 15 is deformed, the fixed block 14 will be driven to move, and then, through the distance set between the nut 22 and the fixed block 14, the first bellows 15 will not be excessively deformed, resulting in loss of the first bellows 15.
[0051] In the several embodiments provided in the present application, it should be understood that the disclosed systems, modules and methods can be implemented in other ways. For example, the module embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, modules or units, which can be electrical, mechanical or other forms.
[0052] The above embodiments are only used to illustrate the technical solution of the present application, but not to limit it. The present application is not limited to the exact structure described above and illustrated in the accompanying drawings, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, various changes and modifications made without departing from the concept of the present application should be deemed to belong to the protection scope of the present application.
Claims
1. An expansion joint for a high back pressure condenser, characterized in that: include: Two mirror-image flanges (1), a protective plate (3), and a fixing ring (33); The two sets of fixing rings (33) are respectively connected in mirror-image sliding manner to the middle of the opposite sides of the two flanges (1) through sliding blocks (34) fixedly installed in the middle of the opposite back sides; Both sides of the two protection plates (3) are connected to the opposite sides of the two groups of fixing rings (33) via a plurality of evenly distributed second springs (31), and the opposite sides are fixedly provided with a plurality of evenly distributed third springs (32).
2. The expansion joint for a high back pressure condenser according to claim 1, characterized in that: Fixed blocks (14) are fixedly installed on both sides of the two flanges (1), screw rods (2) are arranged in the middle of the four fixed blocks (14), and nuts (22) are threadedly installed on both ends of the four screw rods (2).
3. The expansion joint for a high back pressure condenser according to claim 1, characterized in that: Four mirror-distributed slide grooves (11) are provided on opposite sides of the two flanges (1), and the four sliding blocks (34) are slidably clamped inside the slide grooves (11).
4. The expansion joint for a high back pressure condenser according to claim 3, characterized in that: Two groups of mirror-distributed grooves (121) are provided on opposite sides of the two flanges (1), a first spring (12) is fixedly arranged inside the four grooves (121), and a limiting bead (13) is fixedly arranged on one side of the four groups of the first springs (12).
5. The expansion joint for a high back pressure condenser according to claim 4, characterized in that: The four sliding blocks (34) are provided with limiting grooves (341) on opposite sides thereof, and the four groups of limiting beads (13) are slidably clamped inside the limiting grooves (341).
6. The expansion joint for a high back pressure condenser according to claim 2, characterized in that: A second corrugated tube (21) is fixedly mounted on opposite sides of the four screw rods (2).
7. The expansion joint for a high back pressure condenser according to claim 2, characterized in that: The middle parts of the four fixing blocks (14) are each provided with a mounting hole (141), and the middle parts of the four screw rods (2) are each slidably passed through the mounting hole (141).
8. The expansion joint for a high back pressure condenser according to claim 1, characterized in that: A first bellows (15) is fixedly mounted in the middle of opposite sides of the two flanges (1).