A gas leakage prevention device for a gas supercharging pump

Abstract

The utility model discloses a kind of gas leakage prevention devices for gas booster pump, comprising: gas booster pump, the both sides of gas booster pump are provided with threaded joint, pipeline connecting unit, it includes two nut joints, two The nut joint is respectively threaded and set on two threaded joints, the end of two The nut joint is slidably sleeved with rubber tube, sleeve type gas leakage prevention unit, it includes two sealing elements, two The sealing element is respectively arranged at the junction of two rubber tubes and nut joint, The sealing element includes two half-round plates, two ends of each The half-round plate is equipped with connecting lug. The utility model is by sealing element to rubber tube is carried out large area and even pressure exertion, to avoid local stress concentration to cause rubber tube to be damaged, to ensure that rubber tube effectively bears air pressure load, to prevent the junction of rubber tube from rupture and leakage due to excessive pressure.

Description

Technical Field

[0001] This utility model relates to the field of gas booster pump technology, and in particular to a gas leak prevention device for a gas booster pump. Background Technology

[0002] A natural gas booster pump is an industrial device that uses pneumatic drive to increase gas pressure. It is mainly used in machine tool pneumatic chuck clamping, accumulator charging, high-pressure cylinder charging, and other scenarios. Its core function is to convert low-pressure gas into high-pressure gas. It supports multiple driving methods such as compressed air and nitrogen, and has automatic pressure holding characteristics. It is suitable for applications such as pneumatic chuck clamping in machine tools.

[0003] Some gas booster pumps use clamps to fix the gas hose at the vent end. This connection method achieves a seal by generating radial pressure through bolt tightening of the clamp. However, the pressure of the clamp is concentrated at the bolt connection of the clamp ring. This results in uneven distribution of tightening force during tightening. Excessive or insufficient local compression may damage the sealing performance. Furthermore, for some narrow clamps, if the bolt tightening force is too large, the radial pressure concentration may cause squeezing damage to the pipe surface. Especially under high gas pressure conditions at the vent end of the booster pump, the connection between the pipe and the clamp is prone to material fatigue or plastic deformation due to stress concentration, eventually leading to interface rupture and increasing the risk of gas leakage. Therefore, a gas leak prevention device for gas booster pumps is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the current gas booster pump anti-leakage device, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a gas leak prevention device for a gas booster pump. It is applicable to solving the problem that uneven distribution of tightening force of the clamps during tightening may damage the sealing performance between the gas booster pump and the pipeline, and some narrow clamps may cause squeezing damage to the pipeline surface. Especially under high gas pressure conditions at the gas inlet of the booster pump, the connection between the pipeline and the clamp may eventually break due to material fatigue or plastic deformation, thereby increasing the risk of gas leakage.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a gas leak-proof device for a gas booster pump, comprising: A gas booster pump, wherein threaded joints are provided on both sides of the gas booster pump; The pipe connection unit includes two nut connectors, each nut connector being threaded onto two threaded connectors, and a rubber tube being slidably fitted onto the end of each nut connector. The socket-type air-leakage prevention unit includes two sealing elements, which are respectively installed at the connection between two rubber tubes and nut joints. Each sealing element includes two semi-circular plates, and each semi-circular plate has connecting ears at both ends. Adjacent semi-circular plates are fixedly sleeved at the connection between the rubber tubes and nut joints by bolts and nuts.

[0008] As a preferred embodiment of the gas leak prevention device for a gas booster pump described in this utility model, the nut joint includes a sealing sleeve threaded onto a threaded joint, one end of the sealing sleeve is fixedly connected to a steel pipe, the rubber tube is slidably sleeved on the steel pipe, and the sealing element acts at the connection between the rubber tube and the steel pipe.

[0009] As a preferred embodiment of the gas leak prevention device for a gas booster pump described in this utility model, the two interconnected semicircular plates do not contact each other and have a gap for the rubber tube to deform under pressure.

[0010] As a preferred embodiment of the gas leak prevention device for a gas booster pump described in this utility model, each of the two openings on the inner wall of each semicircular plate is provided with a beveled surface to prevent the rubber tube from being squeezed, and the bends of each semicircular plate and its connecting lug are smoothly transitioned.

[0011] As a preferred embodiment of the gas leak prevention device for a gas booster pump described in this utility model, a rubber pad is provided between the contact surface of each semicircular plate and the rubber tube. The rubber pad is bent into a semicircular tube shape and matches the size of the semicircular plate. The surface of the rubber pad is provided with micro-convex anti-slip texture.

[0012] As a preferred embodiment of the gas leak prevention device for a gas booster pump described in this utility model, wherein: the opposite surfaces of two adjacent semicircular plates are fixedly connected with pins, and the opposite surfaces of two adjacent semicircular plates are provided with insertion holes for fitting the pins, and the pins of the two adjacent semicircular plates are inserted into each other's insertion holes.

[0013] As a preferred embodiment of the gas leak prevention device for a gas booster pump described in this utility model, the insertion hole and the pin are both tapered, the pin contains a magnet, and the semi-circular plate is made of magnetic material and is attracted to the pin magnetically.

[0014] As a preferred embodiment of the gas leak prevention device for a gas booster pump described in this utility model, a Z-shaped plate is fixedly connected to the side wall of a portion of the semi-circular plate, and internal threaded cylinders are fixedly connected to both sides of the gas booster pump. The two Z-shaped plates are fixed to the two internal threaded cylinders respectively by bolts.

[0015] The beneficial effects of this utility model are as follows: When the gas booster pump is in a high-pressure working condition, the sealing element applies pressure to the rubber tube over a large area and evenly to avoid local stress concentration that could damage the rubber tube. It also improves the sealing performance and durability of the rubber tube and nut joint. The sealing element can also improve the strength of the connection between the rubber tube and the nut joint, thereby ensuring that the rubber tube can effectively withstand the gas pressure load and preventing the connection of the rubber tube from rupturing and leaking due to excessive pressure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of the anti-leakage device for a gas booster pump proposed in this utility model; Figure 2 This is a schematic diagram of the structure proposed in this utility model; Figure 3 This is a schematic diagram of the disassembled structure of the threaded joint and nut joint proposed in this utility model. Attached image description: 100. Gas booster pump; 101. Threaded connector; 200. Pipe connection unit; 201. Nut connector; 201a. Sealing nut sleeve; 201b. Steel pipe; 202. Rubber hose; 300. Socket-type air leak prevention unit; 301. Sealing element; 301a. Semicircular plate; 302. Rubber gasket; 303. Pin; 304. Insertion hole; 305. Z-shaped plate; 306. Internal threaded cylinder. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0021] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0022] Example 1 Reference Figures 1-3 The first embodiment of this utility model provides a gas booster pump anti-leakage device that can improve the strength and sealing of the connection between the rubber hose and the nut joint, thereby preventing the connection of the rubber hose from rupturing and leaking due to excessive pressure. It includes: a gas booster pump 100, a pipe connection unit 200 and a socket-type anti-leakage unit 300. Among them, threaded joints 101 are provided on both sides of the gas booster pump 100; The pipe connection unit 200 includes two nut joints 201, which are threaded onto two threaded joints 101 respectively, and rubber tubes 202 are slidably sleeved at the ends of the two nut joints 201. The socket-type air-leakage prevention unit 300 includes two sealing elements 301. The two sealing elements 301 are respectively set at the connection between the two rubber tubes 202 and the nut joint 201. The sealing element 301 includes two semi-circular plates 301a. Each semi-circular plate 301a has connecting ears at both ends. The two adjacent semi-circular plates 301a are fixedly sleeved at the connection between the rubber tubes 202 and the nut joint 201 by bolts and nuts.

[0023] The threaded joints 101 on both sides of the gas booster pump 100 are threadedly connected to two nut joints 201 respectively. The rubber tube 202 is slidably sleeved on the end of the nut joint 201 to realize the initial connection between the pipeline and the pump body. The two rubber tubes 202 are used for gas input and output. The sealing element 301 is composed of two semi-circular plates 301a. The connecting ears of the semi-circular plates 301a are fixed by bolts and nuts, so that the sealing element 301 is tightly sleeved at the connection between the rubber tube 202 and the nut joint 201. The semi-circular plates 301a are semi-circular tubes. After the two semi-circular plates 301a are spliced ​​together, they form a tubular structure, which is sleeved at the connection between the rubber tube 202 and the nut joint 201. Its arc surface of a certain length can apply pressure to the rubber tube 202 over a large area evenly, avoiding local stress concentration that could cause the rubber tube 202 to be squeezed and damaged. When the gas booster pump 100 generates high gas pressure, the large-area encircling structure of the seal 301 can apply uniform pressure to the rubber tube 202 to effectively counteract the impact of gas pressure on the connection and prevent the rubber tube 202 from deforming or breaking due to uneven stress. At the same time, the fastening design of the seal 301 further compresses the contact surface between the rubber tube 202 and the nut joint 201, forming a large-area and tight sealing layer. This not only prevents gas from leaking from the connection gap, but also ensures that the gas booster pump 100 operates safely and stably under high-pressure conditions.

[0024] Example 2 Reference Figure 1 and Figure 2 This is the second embodiment of the present invention. Unlike the previous embodiment, the nut connector 201 includes a sealing sleeve 201a threaded onto the threaded connector 101. One end of the sealing sleeve 201a is fixedly connected to a steel pipe 201b. The rubber tube 202 is slidably sleeved on the steel pipe 201b, and the sealing element 301 acts at the connection between the rubber tube 202 and the steel pipe 201b.

[0025] The sealing sleeve 201a of the nut connector 201 is threadedly fitted onto the threaded connector 101 of the gas booster pump 100 in a sealed state, realizing the initial sealed connection between the pump body and the external pipeline. The steel pipe 201b fixedly connected to one end of the sealing sleeve 201a provides sliding space for the rubber hose 202. The rubber hose 202 can be easily pulled out from the steel pipe 201b and replaced regularly to ensure that the gas pipeline is always in good operating condition. At the same time, the high-strength steel pipe 201b can provide stable support for the rubber hose 202, enabling it to effectively withstand the pressure applied by the sealing element 301, ensuring the reliability and sealing of the connection structure, and preventing gas leakage.

[0026] Example 3 Reference Figure 1 and Figure 3This is the third embodiment of the present invention. Unlike the previous embodiment, the two interconnected semicircular plates 301a do not contact each other and have a gap for the rubber tube 202 to deform under pressure.

[0027] When the seal 301 is tightened by bolts and nuts, the rubber tube 202 is squeezed inward under radial pressure and tightly adheres to the steel tube 201b. At this time, the gap reserved between the two semicircular plates 301a provides elastic deformation space for the rubber tube 202, preventing it from directly bearing pressure due to its inability to deform, which could cause surface cracks or damage. After the two semicircular plates 301a are tightened, the gap between them is controlled within 3 mm, ensuring that the semicircular plates 301a cover the rubber tube 202 as comprehensively as possible, thereby improving the sealing performance of the rubber tube 202 while avoiding excessive compression.

[0028] Each semicircular plate 301a has an inclined surface at both ends of the inner wall opening to prevent the rubber tube 202 from being squeezed, and the bends of each semicircular plate 301a and its connecting lugs are smoothly transitioned.

[0029] Each semicircular plate 301a has a beveled surface at both ends of the inner wall opening. The purpose of this is to prevent the right-angled edge from cutting and damaging the rubber tube 202. At the same time, the bend between the semicircular plate 301a and the connecting ear is rounded to avoid sharp connecting edges and prevent local breakage or deformation of the semicircular plate 301a due to long-term stress.

[0030] In addition, a rubber pad 302 is provided between the contact surfaces of each semicircular plate 301a and the rubber tube 202. The rubber pad 302 is bent in a semicircular tube shape and matches the size of the semicircular plate 301a. The surface of the rubber pad 302 is provided with micro-convex anti-slip texture.

[0031] The rubber pad 302 can further evenly distribute the extrusion pressure through its own elasticity, avoiding direct wear of the rubber tube 202 on the surface of the semi-circular plate 301a. The micro-convex anti-slip texture on the surface of the rubber pad 302 increases the friction with the rubber tube 202, preventing the seal 301 from sliding axially under the impact of high-pressure airflow, and ensuring the continuous effectiveness of the sealing pressure.

[0032] Example 4 Reference Figure 1 and Figure 3 This is the fourth embodiment of the present utility model. Unlike the previous embodiment, each of the two adjacent semicircular plates 301a has a pin 303 fixedly connected to its opposite surface. Each of the two adjacent semicircular plates 301a has a hole 304 for fitting the pin 303 on its opposite surface. The pins 303 of the two adjacent semicircular plates 301a are inserted into each other's holes 304.

[0033] When the pins 303 of two adjacent semicircular plates 301a are inserted into the sockets 304 of the other, it can ensure that the axes of the two semicircular plates 301a are aligned when the rubber tube 202 is connected. This allows the relative positions of the semicircular plates 301a to be temporarily fixed before the bolts are tightened, preventing them from slipping or shifting during assembly, thereby improving the ease of installation.

[0034] Both the socket 304 and the pin 303 are tapered to facilitate quick insertion of the pin 303 into the socket 304. The pin 303 contains a magnet, and the semi-circular plate 301a is made of magnetic material and is attracted to the pin 303 by magnetism.

[0035] The magnetic attraction between the pin 303 and the semicircular plate 301a allows the two semicircular plates 301a to quickly approach and adhere to each other through magnetic force, achieving pre-positioning. The magnetic attraction force is designed to only attract the weight of one semicircular plate 301a, which not only meets the temporary fixing needs during assembly and prevents the semicircular plate 301a from slipping due to gravity, but also makes it easy to manually separate the adhered semicircular plates 301a, thus balancing the convenience of installation and the flexibility of disassembly.

[0036] In addition, Z-shaped plates 305 are fixedly connected to the side walls of some semi-circular plates 301a, and internal threaded cylinders 306 are fixedly connected to both sides of the gas booster pump 100. The two Z-shaped plates 305 are fixed to the two internal threaded cylinders 306 respectively by bolts.

[0037] Part of the semi-circular plate 301a is bolted to the internally threaded cylinders 306 on both sides of the gas booster pump 100 via the Z-shaped plate 305 on the side wall, forming a rigid support structure. After the bolt passes through the Z-shaped plate 305 and is tightened to the internally threaded cylinder 306, the weight and force of the seal 301 are transferred to the pump body, avoiding the displacement risk caused by the seal 301 being connected to the nut joint 201 only through the rubber tube 202, and ensuring the reliability of the sealing structure under high pressure conditions.

[0038] During use, the threaded joints 101 on both sides of the gas booster pump 100 are threadedly connected to the sealing sleeves 201a of the two nut joints 201 respectively. Then, the two rubber tubes 202 are slidably sleeved on the steel tubes 201b at one end of the two sealing sleeves 201a respectively. Next, the two semi-circular plates 301a are sleeved on the connection between the rubber tubes 202 and the steel tubes 201b, and two rubber pads 302 are inserted between the two semi-circular plates 301a. Then, the two adjacent semi-circular plates 301a are initially spliced ​​and fixed by the tapered pins 303 and the insertion holes 304. Then, the spliced ​​two semi-circular plates 301a are fixed with bolts and nuts. After the semicircular plates 301a on both sides of the gas booster pump 100 are fixed, the Z-shaped plates 305 on part of the semicircular plates 301a are bolted to the internal threaded cylinders 306 on both sides of the gas booster pump 100 to form a rigid support structure and prevent the seal 301 from shifting. The semicircular plates 301a can apply pressure to the rubber tube 202 over a large area, avoiding local stress concentration in the rubber tube 202 and causing compression damage. When the gas booster pump 100 generates high gas pressure, the seal 301 can also apply uniform pressure to the rubber tube 202 through the circumferential structure to offset the impact of gas pressure on the connection, prevent the rubber tube 202 from deforming or breaking, thereby preventing gas from leaking from the connection gap and ensuring that the gas booster pump 100 operates safely and stably under high pressure conditions.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A gas leak prevention device for a gas booster pump, characterized in that, include: A gas booster pump (100) is provided with threaded joints (101) on both sides; The pipe connection unit (200) includes two nut joints (201), which are threadedly sleeved on two threaded joints (101), and the ends of the two nut joints (201) are slidably sleeved with rubber tubes (202). A socket-type leak-proof unit (300) includes two sealing elements (301). The two sealing elements (301) are respectively disposed at the connection between two rubber tubes (202) and the nut joint (201). Each sealing element (301) includes two semi-circular plates (301a). Each semi-circular plate (301a) has connecting ears at both ends. Two adjacent semi-circular plates (301a) are fixedly sleeved at the connection between the rubber tube (202) and the nut joint (201) by bolts and nuts.

2. The gas leak prevention device for a gas booster pump according to claim 1, characterized in that: The nut connector (201) includes a sealing sleeve (201a) threaded onto the threaded connector (101), one end of which is fixedly connected to a steel pipe (201b), the rubber tube (202) is slidably sleeved on the steel pipe (201b), and the sealing element (301) acts at the connection between the rubber tube (202) and the steel pipe (201b).

3. The gas leak prevention device for a gas booster pump according to claim 2, characterized in that: The two interconnected semicircular plates (301a) do not contact each other and have gaps for the rubber tube (202) to deform under pressure.

4. The gas leak prevention device for a gas booster pump according to claim 3, characterized in that: Each of the semicircular plates (301a) has an inclined surface at both ends of the inner wall to prevent the rubber tube (202) from being squeezed, and the bends of each semicircular plate (301a) and its connecting lugs are smoothly transitioned.

5. The gas leak prevention device for a gas booster pump according to claim 4, characterized in that: A rubber pad (302) is provided between the contact surfaces of each of the semicircular plates (301a) and the rubber tube (202). The rubber pad (302) is bent in a semicircular tube shape and matches the size of the semicircular plate (301a). The surface of the rubber pad (302) is provided with micro-convex anti-slip texture.

6. The gas leak prevention device for a gas booster pump according to claim 5, characterized in that: Each of the two adjacent semicircular plates (301a) is fixedly connected with a pin (303) on its opposite surface. Each of the two adjacent semicircular plates (301a) has a hole (304) for fitting the pin (303) on its opposite surface. The pins (303) of the two adjacent semicircular plates (301a) are inserted into each other's holes (304).

7. The gas leak prevention device for a gas booster pump according to claim 6, characterized in that: Both the socket (304) and the pin (303) are tapered. The pin (303) contains a magnet. The semicircular plate (301a) is made of magnetic material and is magnetically attracted to the pin (303).

8. The gas leak prevention device for a gas booster pump according to claim 7, characterized in that: A Z-shaped plate (305) is fixedly connected to the side wall of a portion of the semi-circular plate (301a), and internal threaded cylinders (306) are fixedly connected to both sides of the gas booster pump (100). The two Z-shaped plates (305) are fixed to the two internal threaded cylinders (306) respectively by bolts.

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