Novel efficient sealing device for low-temperature ethylene pump

Abstract

The utility model belongs to the technical field of sealing devices, and discloses a novel efficient sealing device for a low-temperature ethylene pump, which comprises a bottom plate, the top end of the bottom plate is fixedly connected with an ethylene pump body through bolts, two ends of the ethylene pump body are provided with transmission pipes, one transmission pipe is an output pipe, and the other transmission pipe is an output pipe. One conveying pipe is an input pipe, the other conveying pipe is an input pipe, one end of each conveying pipe is provided with a clamping mechanism, each clamping mechanism comprises a first clamping ring, the inner surface of each first clamping ring is rotationally connected with the inner surface of the corresponding conveying pipe in a sleeving mode, one end of each conveying pipe is provided with a connecting pipe, and the outer surface of each connecting pipe is rotationally connected with a second clamping ring in a sleeving mode. According to the low-temperature ethylene pump, by arranging the butt joint pipe in the clamping mechanism, the influence of the low-temperature environment on the sealing performance can be effectively resisted, the deformation of the pipeline generated in the low-temperature ethylene conveying process is compensated, the sealing effect is enhanced, and the overall working efficiency and reliability of the low-temperature ethylene pump are improved.

Description

Technical Field

[0001] This utility model belongs to the field of sealing device technology, specifically a new type of high-efficiency sealing device for cryogenic ethylene pumps. Background Technology

[0002] Ethylene, as an important basic petrochemical raw material, has wide applications in many industrial fields such as petrochemicals and plastics manufacturing. Cryogenic ethylene pumps play a critical role in the storage, transportation, and related industrial processes of ethylene, and their reliability and stability are essential to the entire industrial production chain.

[0003] Meanwhile, the patent specification with application number CN108050044A discloses an ethylene cryogenic reciprocating pump, "including a reciprocating pump body, a connecting bolt on the left side of the reciprocating pump body, a nut on the outside of the connecting bolt, a piston rod on the right side of the connecting bolt, a fixing screw hole on the outside of the piston rod, a pump housing on the outside of the reciprocating pump body, a vacuum valve at the bottom of the reciprocating pump body, a drain pipe on the top of the reciprocating pump body, an outer nut on the outside of the drain pipe, a valve seat at the bottom of the outer nut, a floating valve on the bottom inner side of the valve seat, a cylinder inside the reciprocating pump body, a pressure spring on the right side of the cylinder, a fastening bolt on the bottom right side of the cylinder, and an end cap distributed on the right side of the reciprocating pump body; the vacuum valve includes an O-ring, a plug, and a vacuum sleeve."

[0004] Existing cryogenic ethylene pump sealing devices have poor sealing performance at their connection points during use, making them prone to leakage during long-term transport of cryogenic ethylene. This not only wastes ethylene raw materials but also poses certain safety hazards. Furthermore, the connection structure of existing cryogenic ethylene pump sealing devices is mostly fixed by flanges and multiple bolts. During installation, each bolt must be tightened individually, which is cumbersome and consumes a lot of time and manpower. During later maintenance, many bolts must be loosened one by one, making the whole process quite complicated.

[0005] Therefore, a novel high-efficiency sealing device for cryogenic ethylene pumps is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a novel high-efficiency sealing device for cryogenic ethylene pumps, which has the advantages of improving the overall working efficiency and reliability of cryogenic ethylene pumps, significantly reducing labor and time costs, and enhancing the ease of equipment maintenance.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A novel high-efficiency sealing device for a cryogenic ethylene pump, comprising a base plate, the top of which is fixedly connected to an ethylene pump body by bolts. Both ends of the ethylene pump body are equipped with transmission pipes, one of which is an output pipe and the other is an input pipe. Each of the two transmission pipes has a locking mechanism at one end. The locking mechanism includes a locking ring one, the inner surface of which is rotatably sleeved with the inner surface of the transmission pipe. One end of the transmission pipe is provided with a connecting pipe, the outer surface of which is rotatably sleeved with a locking ring two. Two retaining sleeves one are fixedly connected to the outer surface of the locking ring one near the connecting pipe, and two retaining sleeves two are fixedly connected to the outer surface of the locking ring two near the transmission pipe. A locking strip one, used in conjunction with the two retaining sleeves two, is fixedly connected to the outer surface of the locking ring one, and a locking strip two, used in conjunction with the two retaining sleeves one, is fixedly sleeved on the outer surface of the locking ring two.

[0008] Preferably, one side inner wall of each of the two card sleeves 1 and the two card sleeves 2 is fixedly connected with an elastic element, and one end of each of the two card strips 1 and the two card strips 2 is provided with a groove for use with the elastic element.

[0009] Preferably, a fixing ring 1 is fixedly sleeved at the opening of both the transmission pipe and the connecting pipe, and a connecting pipe is slidably connected to the inner surface of both fixing ring 1. A fixing ring 2 is fixedly connected to one end of each of the two connecting pipes, and the outer surface of each fixing ring 2 is slidably connected to the inner surface of the transmission pipe and the connecting pipe, respectively.

[0010] Preferably, a return spring is fixedly connected to one end of each of the two fixed rings and the two fixed rings, and the two return springs are respectively sleeved with the two connecting pipes.

[0011] Preferably, one end of each of the two connecting pipes is fixedly connected to a docking ring, and one end of each of the two fixed rings is provided with an annular groove for use with the two docking rings.

[0012] Preferably, an elastic sealing ring is provided between the two mating rings, and the elastic sealing ring is made of low-temperature resistant rubber.

[0013] Preferably, a filter screen is fixedly connected to the inner surface of the elastic sealing ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, by setting the connecting pipe in the snap-fit ​​mechanism, ensures that the elastic sealing ring always maintains a tight fit between the two connecting rings under the elastic reset action of the return spring. The elastic sealing ring is made of low-temperature resistant rubber material, which can effectively resist the influence of low temperature environment on sealing performance, compensate for the deformation of the pipeline caused by low-temperature ethylene transportation, strengthen the sealing effect, and improve the overall working efficiency and reliability of the low-temperature ethylene pump.

[0016] 2. Through the snap-fit ​​ring one and snap-fit ​​ring two in the snap-fit ​​mechanism, the snap-fit ​​strip and the snap-fit ​​sleeve are tightly snapped together under the elastic force of the elastic element, forming a stable and well-sealed connection structure. This makes the device greatly simplify the installation and disassembly process while ensuring the sealing effect, significantly reducing manpower and time costs, and improving the ease of maintenance of the equipment. Attached Figure Description

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

[0018] Figure 2 This is an exploded view of the transmission pipe and connecting pipe of this utility model;

[0019] Figure 3 This utility model Figure 2 Schematic diagram of the structure at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the two sides of the snap-fit ​​ring of this utility model;

[0021] Figure 5 This is a cross-sectional schematic diagram of the transmission pipe and connecting pipe of this utility model.

[0022] In the diagram: 1. Base plate; 2. Ethylene pump body; 3. Connecting pipe;

[0023] 4. Transmission pipe; 41. Return spring; 42. Fixing ring one; 43. Connecting pipe; 44. Annular groove; 45. Connecting ring; 46. Fixing ring two;

[0024] 5. Snap-fit ​​mechanism; 51. Snap-fit ​​ring two; 52. Snap-fit ​​sleeve one; 53. Snap-fit ​​ring one; 54. Snap-fit ​​strip one; 55. Elastic sealing ring; 56. Filter screen; 57. Snap-fit ​​sleeve two; 571. Elastic element; 58. Snap-fit ​​strip two; 581. Groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1 to 5 As shown, this utility model provides a novel high-efficiency sealing device for a cryogenic ethylene pump, including a base plate 1. An ethylene pump body 2 is fixedly connected to the top of the base plate 1 by bolts. Both ends of the ethylene pump body 2 are equipped with transmission pipes 4, one of which is an output pipe and the other is an input pipe. The base plate 1 provides a stable support foundation for the entire device. The ethylene pump body 2, as the core component, performs the work of conveying ethylene, while the transmission pipes 4 are responsible for the inlet and outlet transmission of ethylene. One end of each of the two transmission pipes 4 is provided with a snap-fit ​​mechanism 5, which facilitates connection with external pipelines.

[0027] The snap-fit ​​mechanism 5 includes a snap-fit ​​ring 53, the inner surface of which is rotatably sleeved with the inner surface of the transmission pipe 4. One end of the transmission pipe 4 is provided with a connecting pipe 3. A snap-fit ​​ring 51 is rotatably sleeved on the outer surface of the connecting pipe 3. Two clamping sleeves 52 are fixedly connected to the snap-fit ​​ring 53 near the outer surface of the connecting pipe 3. Two clamping sleeves 57 are fixedly connected to the snap-fit ​​ring 51 near the outer surface of the transmission pipe 4. A snap-fit ​​strip 54 that works with the two clamping sleeves 57 is fixedly connected to the outer surface of the snap-fit ​​ring 53. A snap-fit ​​strip 58 that works with the two clamping sleeves 52 is fixedly sleeved on the outer surface of the snap-fit ​​ring 51. This mechanism enables a fast and stable snap-fit ​​connection, ensuring the sealing and reliability of the connection and reducing the risk of ethylene leakage.

[0028] Specifically, elastic elements 571 are fixedly connected to one inner wall of the two clamping sleeves 52 and the two clamping sleeves 57. One end of the two clamping strips 54 and the two clamping strips 58 is provided with a groove 581 for use with the elastic element 571. The clamping sleeves 52, clamping sleeves 57, clamping strips 54 and clamping strips 58 cooperate with each other. The elastic element 571 can provide a certain elastic buffer force during the clamping process, making the clamping tighter. At the same time, when the pipeline is slightly deformed due to external impact or temperature change, it can adaptively adjust to maintain a good sealing state and effectively prevent ethylene leakage.

[0029] Furthermore, a fixing ring 42 is fixedly sleeved at the opening of both the transmission pipe 4 and the connecting pipe 3. The inner surfaces of the two fixing rings 42 are slidably connected to the connecting pipe 43. The corresponding ends of the two connecting pipes 43 are fixedly connected to the fixing ring 46. The outer surfaces of the two fixing rings 46 are slidably connected to the inner surfaces of the transmission pipe 4 and the connecting pipe 3, respectively. The design of the elastic element 571 and the groove 581 further enhances the stability of the snap-fit.

[0030] Furthermore, the two fixing rings 42 and 46 are respectively fixedly connected to a return spring 41 at one end. The two return springs 41 are respectively sleeved with the two connecting pipes 43, so that there is a certain amount of expansion and contraction margin when the pipe is connected, which can adapt to the difference in pipe length under different installation environments or the expansion and contraction of the pipe due to temperature changes, ensure the tightness of the connection, and prevent the sealing failure due to pipe deformation.

[0031] It is worth noting that each of the two connecting pipes 43 is fixedly connected to a connecting ring 45 at one end, and each of the two fixed rings 42 has an annular groove 44 at one end corresponding to the two connecting rings 45, which provides precise positioning guidance for pipe connection, making the connection process more convenient and accurate, and effectively improving the efficiency of pipe connection.

[0032] It is worth noting that an elastic sealing ring 55 is provided between the two mating rings 45. The elastic sealing ring 55 is made of low-temperature resistant rubber, which can adapt to the working environment of low-temperature ethylene and maintain good elasticity and sealing performance under low-temperature conditions. Located between the mating rings 45, it effectively fills the mating gap, forms a reliable sealing barrier, prevents ethylene leakage, ensures the sealing effect of the low-temperature ethylene pump, and improves the safety and reliability of the device.

[0033] It is worth mentioning that a filter screen 56 is fixedly connected to the inner surface of the elastic sealing ring 55. The filter screen 56 can filter out impurity particles in ethylene, preventing impurities from entering the pump body or accumulating at the pipe connection, and avoiding wear of sealing components or affecting sealing performance due to impurities.

[0034] The structure, including the electric motor, is existing technology and will not be described further. Additionally, this utility model also includes a power supply, controller, and switch, which are not the main technical points of this patent and will not be described further. The "front, rear, left, and right" views of this device are... Figure 1 The direction shown in the diagram is the reference.

[0035] Working Principle: During device installation, firstly, connect the connecting pipe 3 to the relevant external pipeline. Then, push the snap ring 1 53 and snap ring 2 51 closer together. The snap sleeve 1 52 on snap ring 1 53 and the snap sleeve 2 57 on snap ring 2 51 nest together. Snap strip 1 54 and snap strip 2 58 engage with each other. During this process, the elastic element 571 is compressed and inserted into the groove 581. The elastic force of the elastic element 571 makes the snapping tighter and more secure, thus achieving a stable connection between the connecting pipe 3 and the transmission pipe 4. During the connection process, the connecting pipe 43 can slide on the inner surface of the fixing ring 1 42. The fixing ring 2 46 slides along with the connecting pipe 43 on the inner surfaces of the transmission pipe 4 and the connecting pipe 3. The return spring 41 is pulled... The elastic sealing ring 55, located between the two mating rings 45, is made of low-temperature resistant rubber and can maintain good elastic deformation ability in low-temperature environments. It tightly fills the mating gap and effectively prevents ethylene from leaking from the mating point. During the operation of the entire device, ethylene enters the ethylene pump body 2 from the transmission pipe 4, is processed by the pump body, and is then output from another transmission pipe 4. The coordinated action of the components enables the device to adapt to low-temperature environments and maintain good sealing performance and stable operation under different working conditions, effectively preventing ethylene leakage and ensuring the safe and efficient operation of the low-temperature ethylene pump system.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel high-efficiency sealing device for cryogenic ethylene pumps, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to the ethylene pump body (2) by bolts. Both ends of the ethylene pump body (2) are equipped with transmission pipes (4), one of the transmission pipes (4) is an output pipe, and the other transmission pipe (4) is an input pipe. One end of each of the two transmission pipes (4) is provided with a snap-fit ​​mechanism (5). The snap-fit ​​mechanism (5) includes a snap-fit ​​ring one (53), the inner surface of the snap-fit ​​ring one (53) is rotatably sleeved with the inner surface of the transmission tube (4), one end of the transmission tube (4) is provided with a connecting tube (3), the outer surface of the connecting tube (3) is rotatably sleeved with a snap-fit ​​ring two (51), the snap-fit ​​ring one (53) is fixedly connected with two snap sleeves one (52) near the outer surface of the connecting tube (3), the snap-fit ​​ring two (51) is fixedly connected with two snap sleeves two (57) near the outer surface of the transmission tube (4), the outer surface of the snap-fit ​​ring one (53) is fixedly connected with a snap-fit ​​strip one (54) used in conjunction with the two snap sleeves two (57), and the outer surface of the snap-fit ​​ring two (51) is fixedly sleeved with a snap-fit ​​strip two (58) used in conjunction with the two snap sleeves one (52).

2. The novel high-efficiency sealing device for a cryogenic ethylene pump according to claim 1, characterized in that: The inner walls of one side of the two card sleeves (52) and the two card sleeves (57) are fixedly connected with elastic elements (571), and one end of the two card strips (54) and the two card strips (58) are provided with grooves (581) for use with the elastic elements (571).

3. A novel high-efficiency sealing device for a cryogenic ethylene pump according to claim 1, characterized in that: The openings of the transmission pipe (4) and the connecting pipe (3) are both fixedly fitted with a first fixing ring (42). The inner surfaces of the two first fixing rings (42) are slidably connected with connecting pipes (43). The corresponding ends of the two connecting pipes (43) are fixedly connected with a second fixing ring (46). The outer surfaces of the two second fixing rings (46) are slidably connected to the inner surfaces of the transmission pipe (4) and the connecting pipe (3), respectively.

4. A novel high-efficiency sealing device for a cryogenic ethylene pump according to claim 3, characterized in that: One end of each of the two fixed rings (42) and the two fixed rings (46) is fixedly connected to a return spring (41), and the two return springs (41) are respectively sleeved with the two connecting pipes (43).

5. A novel high-efficiency sealing device for a cryogenic ethylene pump according to claim 4, characterized in that: One end of each of the two connecting pipes (43) is fixedly connected to a docking ring (45), and one end of each of the two fixed rings (42) is provided with an annular groove (44) for use with the two docking rings (45).

6. A novel high-efficiency sealing device for a cryogenic ethylene pump according to claim 5, characterized in that: An elastic sealing ring (55) is provided between the two docking rings (45), and the elastic sealing ring (55) is made of low-temperature resistant rubber.

7. A novel high-efficiency sealing device for a cryogenic ethylene pump according to claim 6, characterized in that: A filter screen (56) is fixedly connected to the inner surface of the elastic sealing ring (55).

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