A highly integrated gas turbine generator set

Abstract

The present invention relates to the field of highly integrated gas turbine generator sets, and specifically to a highly integrated gas turbine generator set, comprising a machine body, a connector, a fastening mechanism, a fastening head, a connecting sleeve, a clamping ring, a support rod, a cutting block, a spring protection mechanism, a sleeve ring, a first shell, a rotating column, a connecting block, a second shell, a torsion spring, an air pipe, a connecting mechanism, a fixing ring, a connecting ring, a pressing ring, a first sealing mechanism, an inflating head, an airbag, a first clamping block, a second clamping block, a second sealing mechanism, a rubber ring, a sealing block, a protection sleeve and a support column. Through the coordinated use of the protection mechanism and the fastening mechanism, the protection mechanism is engaged with the fastening mechanism, so that the protection mechanism protects the connection between the air pipe and the connecting mechanism, so that the air pipe at the connection between the air pipe and the connecting mechanism remains in a straight line, thereby preventing the air pipe at that location from folding, thereby preventing the air pipe from breaking and slowing down the speed of gas circulation.

Description

Technical Field

[0001] The present invention relates to the field of highly integrated gas turbine generator sets, in particular to a highly integrated gas turbine generator set. Background Art

[0002] A gas turbine is an internal combustion power machine that uses a continuously flowing gas as a working fluid to drive the impeller to rotate at high speed, converting the energy of the fuel into useful work. It is a rotating impeller heat engine. The gas turbine has the simplest structure and best reflects a series of advantages that are unique to gas turbines, such as small size, light weight, fast start-up, and little or no cooling water. In the main flow of air and gas in a gas turbine, the gas turbine cycle consists of only three major components: the compressor, the combustion chamber, and the gas turbine, which is generally called a simple cycle. Most gas turbines use a simple cycle scheme.

[0003] When in use, a gas turbine needs to provide energy by burning fuel gas. The fuel gas enters the gas turbine through the gas pipe. However, after the gas pipe is connected, the impact generated by the gas pipe sending the fuel gas into the gas turbine can easily cause the gas pipe to fall off the connecting head on the gas turbine, and the gravity of the gas pipe at the connection between the gas pipe and the gas turbine can easily cause the gas pipe to fold, which can easily cause the gas pipe to break or affect the flow of fuel gas. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a highly integrated gas turbine generator set. Through the coordinated use of a protection mechanism and a fastening mechanism, the protection mechanism is engaged with the fastening mechanism, so that the protection mechanism protects the connection between the air pipe and the connecting mechanism, so that the air pipe at the connection between the air pipe and the connecting mechanism remains in a straight line, thereby preventing the air pipe at that location from folding, thereby preventing the air pipe from breaking and slowing down the speed of gas circulation. Through the coordinated use of the fastening mechanism and the first sealing mechanism and the second sealing mechanism, the fastening mechanism squeezes the first sealing mechanism and the second sealing mechanism, thereby improving the sealing between the connecting mechanism and the connector on the machine body, which is beneficial to the use of gas.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a highly integrated gas turbine generator set, a machine body, a connecting head, a fastening mechanism, a protective mechanism, an air pipe, a connecting mechanism, a first sealing mechanism, a second sealing mechanism, a protective sleeve and a support column, the machine body for power generation is fixedly connected to the connecting head for connection, the first sealing mechanism for sealing to prevent gas overflow is fixedly connected to the connecting head for connection and the connecting mechanism for connecting the air pipe, the end of the connecting mechanism for connecting the air pipe away from the first sealing mechanism is fixedly connected to the air pipe for gas circulation, the air pipe for connection The connecting mechanism is fixedly connected to the second sealing mechanism for sealing, the fastening mechanism for fastening and extruding the connecting mechanism is threadedly connected to the connecting head for connection, the fastening mechanism for fastening and extruding the connecting mechanism is slidingly connected to the connecting mechanism for connecting the air pipe and the connecting head, the protecting mechanism for protection is slidingly connected to the air pipe for gas circulation, the protecting mechanism for protecting the air pipe is snap-connected to the fastening mechanism for fastening, the protecting sleeve for protection is sleeved on the air pipe for connection, and the supporting column for supporting the air pipe is sleeved on the air pipe.

[0006] Specifically, the connecting mechanism includes a fixing ring, a connecting ring and a pressing ring, the fixing ring is fixedly connected to the trachea, the end of the fixing ring facing away from the trachea is fixedly connected to the connecting ring, the end of the connecting ring facing away from the fixing ring is fixedly connected to the pressing ring, the pressing ring is snap-connected to the connecting head, the diameter of the fixing ring is the same as the diameter of the pressing ring, the diameter of the fixing ring is larger than the diameter of the trachea, and the diameter of the fixing ring is larger than the diameter of the connecting ring.

[0007] Specifically, the fastening mechanism includes a fastening head, a connecting sleeve and a retaining ring, the retaining ring is slidably connected to the connecting ring, the retaining ring and the connecting sleeve are threadedly connected, one end of the connecting sleeve is fixedly connected to an end of the retaining ring away from the clamping ring, and the other end of the connecting sleeve is fixedly connected to the fastening head, the outer diameter of the fastening head is larger than the outer diameter of the connecting sleeve, the inner diameter of the fastening head is equal to the outer diameter of the fixing ring, the outer diameter of the connecting sleeve is smaller than the outer diameter of the fastening head, the inner diameter of the connecting sleeve is equal to the outer diameter of the fixing ring, the outer diameter of the retaining ring is equal to the outer diameter of the connecting sleeve, the inner diameter of the retaining ring is equal to the outer diameter of the connecting ring, and the fastening head and the connecting sleeve are slidably connected to the fixing ring.

[0008] Specifically, the first sealing mechanism includes an inflation head, an airbag, a first clamp block and a second clamp block. The first clamp block with a triangular cross-section is fixedly connected to the clamping ring. There are multiple first clamp blocks, and the multiple first clamp blocks are evenly arranged on the end of the clamping ring away from the connecting ring. The second clamp block with a triangular cross-section is fixedly connected to the connecting head. There are multiple second clamp blocks, and the multiple second clamp blocks are evenly arranged on the connecting head. The first clamp block on the clamping ring engages with the second clamp block on the connecting head. The second clamp block is fixedly connected to the airbag, and the first clamp block contacts the airbag. The airbag is fixedly installed in the connecting head. The inflation head is fixedly installed on the connecting head. The inflation head is fixedly connected to the airbag.

[0009] Specifically, the second sealing mechanism includes a rubber ring and a sealing block, the rubber ring is fixedly connected to the connector, the sealing block is fixedly connected to one end of the pressing ring away from the connecting ring, the sealing block surrounds the outer side of the first clamping block, and the sealing block contacts the rubber ring.

[0010] Specifically, the protection mechanism includes a ring, a first shell, a rotating column, a connecting block, a second shell and a torsion spring, the ring is sleeved with the trachea, the rotating column is fixedly connected to the ring, the connecting block is rotatably connected to the rotating column, the connecting block is fixedly connected to the first shell and the second shell, the torsion spring is sleeved with the rotating column, one end of the torsion spring is fixedly connected to the ring, the other end of the torsion spring is fixedly connected to the connecting block, and the first shell and the second shell are snap-connected to the fastening head.

[0011] Specifically, the fastening mechanism also includes a support rod, a cutting block and a spring, one end of the support rod is fixedly connected to the fastening head, the other end of the support rod is fixedly connected to the cutting block with a trapezoidal cross-section, the cutting block is located between the protective sleeve and the ring, one end of the spring is fixedly connected to the cutting block, and the other end of the spring is fixedly connected to the fastening head.

[0012] Beneficial effects of the present invention:

[0013] (1) A highly integrated gas turbine generator set of the present invention uses a protective mechanism and a fastening mechanism in coordination, so that the protective mechanism is engaged with the fastening mechanism, so that the protective mechanism protects the connection between the gas pipe and the connecting mechanism, so that the gas pipe at the connection between the gas pipe and the connecting mechanism remains straight, thereby preventing the gas pipe at that location from folding, thereby preventing the gas pipe from breaking and slowing down the speed of gas flow.

[0014] (2) A highly integrated gas turbine generator set of the present invention uses a fastening mechanism and a first sealing mechanism in coordination with a second sealing mechanism, so that the fastening mechanism squeezes the first sealing mechanism and the second sealing mechanism, thereby improving the sealing between the connecting mechanism and the connecting head on the machine body, which is beneficial to the use of fuel gas.

[0015] (3) A highly integrated gas turbine generator set of the present invention uses a fastening mechanism and a protection mechanism in combination to limit the moving distance of the protection mechanism, thereby making the protection mechanism and the air pipe more closely connected, thereby preventing the protection mechanism from vibrating randomly under high vibration conditions, and cushioning the protection mechanism through the fastening mechanism, thereby further protecting the air pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 A structural schematic diagram of a preferred embodiment of a highly integrated gas turbine generator set provided by the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of the connection between the connector and the fastening mechanism shown;

[0019] Figure 3 for Figure 1 An enlarged view of section A is shown;

[0020] Figure 4 for Figure 2 An enlarged view of part B is shown.

[0021] In the figure: 1, body, 2, connecting head, 3, fastening mechanism, 31, fastening head, 32, connecting sleeve, 33, snap ring, 34, support rod, 35, cutting block, 36, spring, 4, protection mechanism, 41, sleeve ring, 42, first shell, 43, rotating column, 44, connecting block, 45, second shell, 46, torsion spring, 5, air pipe, 6, connecting mechanism, 61, fixing ring, 62, connecting ring, 63, pressing ring, 7, first sealing mechanism, 71, inflation head, 72, airbag, 73, first clamping block, 74, second clamping block, 8, second sealing mechanism, 81, rubber ring, 82, sealing block, 9, protective sleeve, 9a, support column. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] like Figure 1-Figure 4As shown, a highly integrated gas turbine generator set according to the present invention comprises a machine body 1, a connector 2, a fastening mechanism 3, a protection mechanism 4, an air pipe 5, a connecting mechanism 6, a first sealing mechanism 7, a second sealing mechanism 8, a protection sleeve 9 and a support column 9a, wherein the machine body 1 for power generation is fixedly connected to the connecting head 2 for connection, the first sealing mechanism 7 for sealing to prevent gas from overflowing is fixedly connected to the connecting head 2 for connection and the connecting mechanism 6 for connecting the air pipe 5, the end of the connecting mechanism 6 for connecting the air pipe 5 away from the first sealing mechanism 7 is fixedly connected to the air pipe 5 for gas circulation, and the connecting mechanism 7 for connecting the air pipe 5 is fixedly connected to the air pipe 5 for gas circulation. The structure 6 is fixedly connected to the second sealing mechanism 8 for sealing, the fastening mechanism 3 for fastening and extruding the connecting mechanism 6 is threadedly connected to the connecting head 2 for connection, the fastening mechanism 3 for fastening and extruding the connecting mechanism 6 is slidably connected to the connecting mechanism 6 for connecting the air pipe 5 and the connecting head 2, the protection mechanism 4 for protection is slidably connected to the air pipe 5 for gas circulation, the protection mechanism 4 for protecting the air pipe 5 is snap-connected to the fastening mechanism 3 for fastening, the protection sleeve 9 for protection is sleeved on the air pipe 5 for connection, and the support column 9a for supporting the air pipe 5 is sleeved on the air pipe 5.

[0024] Specifically, the connecting mechanism 6 includes a fixing ring 61, a connecting ring 62 and a pressing ring 63, the fixing ring 61 is fixedly connected to the trachea 5, the end of the fixing ring 61 away from the trachea 5 is fixedly connected to the connecting ring 62, the end of the connecting ring 62 away from the fixing ring 61 is fixedly connected to the pressing ring 63, the pressing ring 63 is snap-connected to the connecting head 2, the diameter of the fixing ring 61 is the same as the diameter of the pressing ring 63, the diameter of the fixing ring 61 is larger than the diameter of the trachea 5, and the diameter of the fixing ring 61 is larger than the diameter of the connecting ring 62; thereby, it is convenient to squeeze the first sealing mechanism 7 and the second sealing mechanism 8 through the pressing ring 63, thereby improving the sealing performance, so that the fastening mechanism 3 slides on the connecting mechanism 6, and the moving range of the fastening mechanism 3 is limited by the fixing ring 61 and the pressing ring 63.

[0025] Specifically, the fastening mechanism 3 includes a fastening head 31, a connecting sleeve 32 and a snap ring 33, the snap ring 33 is slidably connected to the connecting ring 62, the snap ring 33 and the connecting sleeve 32 are threadedly connected, one end of the connecting sleeve 32 is fixedly connected to the end of the snap ring 33 away from the pressing ring 63, and the other end of the connecting sleeve 32 is fixedly connected to the fastening head 31, the outer diameter of the fastening head 31 is larger than the outer diameter of the connecting sleeve 32, the inner diameter of the fastening head 31 is equal to the outer diameter of the fixing ring 61, and the outer diameter of the connecting sleeve 32 is smaller than the outer diameter of the fixing ring 61. The outer diameter of the fastening head 31 and the inner diameter of the connecting sleeve 32 are equal to the outer diameter of the fixing ring 61, the outer diameter of the clamping ring 33 is equal to the outer diameter of the connecting sleeve 32, and the inner diameter of the clamping ring 33 is equal to the outer diameter of the connecting ring 62. The fastening head 31 and the connecting sleeve 32 are slidably connected to the fixing ring 61; thereby facilitating the sliding of the clamping ring 33 on the connecting ring 62, so that the clamping ring 33 squeezes the pressing ring 63, thereby making the first sealing mechanism 7 and the second sealing mechanism 8 tighter, thereby increasing the sealing performance.

[0026] Specifically, the first sealing mechanism 7 includes an inflatable head 71, an airbag 72, a first clamping block 73 and a second clamping block 74. The first clamping block 73 with a triangular cross section is fixedly connected to the pressing ring 63. There are multiple first clamping blocks 73, and multiple first clamping blocks 73 are evenly arranged at one end of the pressing ring 63 away from the connecting ring 62. The second clamping block 74 with a triangular cross section is fixedly connected to the connecting head 2. There are multiple second clamping blocks 74, and multiple second clamping blocks 74 are evenly arranged on the connecting head 2. The first clamping block 73 on the pressing ring 63 engages with the second clamping block 73 on the connecting head 2. The second clamping block 74 is fixedly connected to the airbag 72, the first clamping block 73 contacts the airbag 72, the airbag 72 is fixedly installed in the connecting head 2, the inflation head 71 is fixedly installed on the connecting head 2, and the inflation head 71 is fixedly connected to the airbag 72; thereby facilitating the engagement of the first clamping block 73 and the second clamping block 74, facilitating the connection between the connecting head 2 and the connecting mechanism 6, and inflating the airbag 72 through the inflation head 71 so that the airbag 72 is filled between the first clamping block 73 and the second clamping block 74, thereby increasing the sealing performance.

[0027] Specifically, the second sealing mechanism 8 includes a rubber ring 81 and a sealing block 82, the rubber ring 81 is fixedly connected to the connector 2, the sealing block 82 is fixedly connected to the end of the clamping ring 63 that is away from the connecting ring 62, the sealing block 82 surrounds the outer side of the first clamping block 73, and the sealing block 82 contacts the rubber ring 81; thereby facilitating the clamping ring 33 to tightly squeeze the clamping ring 63, thereby facilitating the sealing block 82 to squeeze the rubber ring 81, and the first clamping block 73 squeezes the airbag 72, thereby facilitating increasing the sealing performance.

[0028] Specifically, the protection mechanism 4 includes a collar 41, a first shell 42, a rotating column 43, a connecting block 44, a second shell 45 and a torsion spring 46, the collar 41 is sleeved with the trachea 5, the rotating column 43 is fixedly connected to the collar 41, the connecting block 44 is rotatably connected to the rotating column 43, the connecting block 44 is fixedly connected to the first shell 42 and the second shell 45, the torsion spring 46 is sleeved with the rotating column 43, one end of the torsion spring 46 is fixedly connected to the collar 41, and the other end of the torsion spring 46 is fixedly connected to the connecting block 44, the first shell 42 and the second shell 45 are clamped and connected to the fastening head 31; the fastening head 31 is clamped by the first shell 42 and the second shell 45, so that the collar 41, the first shell 42 and the second shell 45 protect the connection between the trachea 5 and the fixing ring 61, thereby preventing the trachea 5 from folding and damaging.

[0029] Specifically, the fastening mechanism 3 also includes a support rod 34, a cutting block 35 and a spring 36, one end of the support rod 34 is fixedly connected to the fastening head 31, the other end of the support rod 34 is fixedly connected to the cutting block 35 with a trapezoidal cross section, the cutting block 35 is between the protective cover 9 and the collar 41, one end of the spring 36 is fixedly connected to the cutting block 35, and the other end of the spring 36 is fixedly connected to the fastening head 31; so that when the power generation generates vibration, when the fastening head 31 vibrates in the direction of the gas pipe 5, the fastening head 31 drives the support rod 34 to make the The cutting block 35 moves toward the direction of the collar 41, so that the collar 41 is more firmly stuck on the cutting block 35, preventing the collar 41 from moving too much, thereby reducing the protection of the connection between the trachea 5 and the fixing ring 61, causing the trachea 5 to break, and when the collar 41 moves toward the direction of the connector 2, the collar 41 is stuck on the cutting block 35 to prevent the movement of the collar 41, and the spring 36 is used for shock absorption, which is conducive to alleviating the vibration generated during the movement of the collar 41, thereby better protecting the trachea 5.

[0030] When in use, first, one end of the pressing ring 63 fixedly connected to the first clamping block 73 is clamped into the second clamping block 74 fixedly connected to the connecting head 2 on the body 1, and then the tightening head 31 is rotated to make the pressing ring 63 connected to the connecting ring 62 threadedly connected to the connecting head 2, and then slowly tightened, the fixing ring 61 squeezes the clamping ring 33 connected to the connecting sleeve 32 toward the position of the second clamping block 74, so that the sealing block 82 moves toward the direction of the rubber ring 81, and the first clamping block 73 contacts the airbag 72, thereby increasing the sealing. Since the diameters of the fixing ring 61 and the pressing ring 63 are larger than the connecting ring 62, the clamping ring 33 is limited to only be between the fixing ring 61 and the pressing ring 63. 3, and facilitate the clamping ring 33 to squeeze the pressing ring 63, and then insert the inflation head 71 through the inflation tube to inflate the air bag 72, so that the air bag 72 fills the gap between the first clamping block 73 and the second clamping block 74, thereby further sealing, and then move the ring 41 on the trachea 5, and then rotate the first shell 42 and the second shell 45 away from the connecting head 2, so that the rotating block connected by the first shell 42 and the second shell 45 rotates on the rotating column 43 on the ring 41, so that the torsion spring 46 sleeved on the rotating column 43 is contracted, and then the first shell 42 and the second shell 45 are rotated in the direction close to the connecting head 2. The first shell 42 and the second shell 45 are moved so that the first shell 42 and the second shell 45 are stuck at the place where the fastening head 31 protrudes from the connecting sleeve 32, and the length of the first shell 42 and the second shell 45 is greater than the sum of the lengths of the fastening head 31 and the connecting sleeve 32, so that when the sleeve ring 41 moves on the air pipe 5, the first shell 42 and the second shell 45 can always protect the connection part between the air pipe 5 and the fixing ring 61, thereby preventing the air pipe 5 from folding, thereby reducing the service life of the air pipe 5 and the amount of gas flowing; so that when the power generation generates vibration, when the fastening head 31 vibrates in the direction of the air pipe 5, the fastening head 31 drives the support rod 34 to make the cutting block 35 move toward the sleeve ring 4 1, so that the ring 41 is more firmly stuck on the cutting block 35, preventing the ring 41 from moving too much, thereby reducing the protection of the connection between the trachea 5 and the fixing ring 61, causing the trachea 5 to break, and when the ring 41 moves in the direction of the connector 2, the ring 41 is stuck on the cutting block 35 to prevent the movement of the ring 41, and the spring 36 is used for shock absorption, which is conducive to alleviating the vibration generated during the movement of the ring 41, so as to better protect the trachea 5, the protective sleeve 9 protects the outer wall of the trachea 5, and the support column 9a is convenient for supporting the trachea 5 to prevent the trachea 5 from folding, which is not conducive to air intake.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A highly integrated gas turbine generator set, characterized in that: The invention comprises a machine body (1), a connecting head (2), a fastening mechanism (3), a protective mechanism (4), an air pipe (5), a connecting mechanism (6), a first sealing mechanism (7), a second sealing mechanism (8), a protective sleeve (9) and a supporting column (9a), wherein the machine body (1) for power generation is fixedly connected to the connecting head (2) for connection, the first sealing mechanism (7) for sealing to prevent gas from overflowing is fixedly connected to the connecting head (2) for connection and the connecting mechanism (6) for connecting the air pipe (5), the connecting mechanism (6) for connecting the air pipe (5) having an end facing away from the first sealing mechanism (7) fixedly connected to the air pipe (5) for gas circulation, and the connecting mechanism (6) of the air pipe (5) for connection is fixedly connected to the connecting head (2) for connection. The second sealing mechanism (8) for sealing is provided; the fastening mechanism (3) for fastening and extruding the connecting mechanism (6) is threadedly connected to the connecting head (2) for connection; the fastening mechanism (3) for fastening and extruding the connecting mechanism (6) is slidably connected to the connecting mechanism (6) for connecting the gas pipe (5) and the connecting head (2); the protection mechanism (4) for protection is slidably connected to the gas pipe (5) for gas circulation; the protection mechanism (4) for protecting the gas pipe (5) is snap-connected to the fastening mechanism (3) for fastening; the protection sleeve (9) for protection is sleeved on the gas pipe (5) for connection; and the support column (9a) for supporting the gas pipe (5) is sleeved on the gas pipe (5); The connecting mechanism (6) comprises a fixing ring (61), a connecting ring (62) and a pressing ring (63); the fixing ring (61) is fixedly connected to the trachea (5); one end of the fixing ring (61) away from the trachea (5) is fixedly connected to the connecting ring (62); one end of the connecting ring (62) away from the fixing ring (61) is fixedly connected to the pressing ring (63); the pressing ring (63) is snap-connected to the connector (2); the diameter of the fixing ring (61) is the same as the diameter of the pressing ring (63); the diameter of the fixing ring (61) is larger than the diameter of the trachea (5); and the diameter of the fixing ring (61) is larger than the diameter of the connecting ring (62); The fastening mechanism (3) comprises a fastening head (31), a connecting sleeve (32) and a snap ring (33); the snap ring (33) is slidably connected to the connecting ring (62); the snap ring (33) and the connecting sleeve (32) are threadedly connected; one end of the connecting sleeve (32) is fixedly connected to an end of the snap ring (33) facing away from the pressing ring (63); the other end of the connecting sleeve (32) is fixedly connected to the fastening head (31); the outer diameter of the fastening head (31) is greater than the outer diameter of the connecting sleeve (32); The inner diameter of the fastening head (31) is equal to the outer diameter of the fixing ring (61), the outer diameter of the connecting sleeve (32) is smaller than the outer diameter of the fastening head (31), the inner diameter of the connecting sleeve (32) is equal to the outer diameter of the fixing ring (61), the outer diameter of the snap ring (33) is equal to the outer diameter of the connecting sleeve (32), the inner diameter of the snap ring (33) is equal to the outer diameter of the connecting ring (62), and the fastening head (31) and the connecting sleeve (32) are slidably connected to the fixing ring (61); The first sealing mechanism (7) comprises an inflation head (71), an air bag (72), a first clamping block (73) and a second clamping block (74); the first clamping block (73) having a triangular cross section is fixedly connected to the pressing ring (63); a plurality of the first clamping blocks (73) are provided, and the plurality of the first clamping blocks (73) are evenly arranged at one end of the pressing ring (63) away from the connecting ring (62); the second clamping block (74) having a triangular cross section is fixedly connected to the connecting head (2); a plurality of the second clamping blocks (74) are provided, and the plurality of the The second clamping blocks (74) are evenly arranged on the connecting head (2); the first clamping blocks (73) on the pressing ring (63) engage with the second clamping blocks (74) on the connecting head (2); the second clamping blocks (74) are fixedly connected to the airbag (72); the first clamping blocks (73) abut against the airbag (72); the airbag (72) is fixedly installed in the connecting head (2); the inflation head (71) is fixedly installed on the connecting head (2); and the inflation head (71) is fixedly connected to the airbag (72); The protection mechanism (4) comprises a collar (41), a first shell (42), a rotating column (43), a connecting block (44), a second shell (45) and a torsion spring (46); the collar (41) is sleeved with the air pipe (5); the rotating column (43) is fixedly connected to the collar (41); the connecting block (44) is rotationally connected to the rotating column (43); the connecting block (44) is fixedly connected to the first shell (42) and the second shell (45); the torsion spring (46) is sleeved with the rotating column (43); one end of the torsion spring (46) is fixedly connected to the collar (41); the other end of the torsion spring (46) is fixedly connected to the connecting block (44); the first shell (42) and the second shell (45) are snap-fitted and connected to the fastening head (31); The fastening mechanism (3) further comprises a support rod (34) and a cutting block (35); one end of the support rod (34) is fixedly connected to the fastening head (31); the other end of the support rod (34) is fixedly connected to the cutting block (35) having a trapezoidal cross section; the cutting block (35) is located between the protective sleeve (9) and the collar (41).

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