CN219830577U

CN219830577U - Pressure-resistant blasting testing machine for pipe

Info

Publication number: CN219830577U
Application number: CN202321212149.7U
Authority: CN
Inventors: 张海宽; 杨晓焕; 李爱玲; 马强
Original assignee: Hebei Jianyan Zhucheng Construction Technology Co ltd
Current assignee: Hebei Jianyan Zhucheng Construction Technology Co ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-10-13
Anticipated expiration: 2033-05-18

Abstract

The utility model relates to a pressure-resistant bursting test machine for pipes, which belongs to the technical field of auxiliary equipment for pipe detection and comprises a frame body, wherein an upper end socket and a lower end socket which are mutually corresponding are arranged on the frame body, a gas release pipe is inserted into the upper end socket, a water inlet pipe is inserted into and fixedly connected with the upper end socket, a limiting block is arranged on one side, close to the upper end socket, of the upper end socket, a piston is arranged on one side, close to the upper end socket, of the limiting block on the lower end socket, a cylinder is fixedly connected on one side, far away from the upper end socket, of the lower end socket, a telescopic rod of the cylinder penetrates through the lower end socket and is fixedly connected with the piston, the lower end socket is in sliding connection with the frame body, and a driving part for driving the lower end socket to move towards or away from the upper end socket is arranged on the frame body. The utility model has the advantages of convenient pipe installation and reduced adverse effect on test effect.

Description

Pressure-resistant blasting testing machine for pipe

Technical Field

The utility model relates to the technical field of auxiliary equipment for pipe detection, in particular to a pressure-resistant blasting testing machine for pipes.

Background

After the pipe production is completed, in order to test the pressure resistance degree of the prepared pipe, the pipe is subjected to pressure resistance test by a pipe pressure resistance blasting tester.

The Chinese patent with the publication number of CN206772725U discloses a pipe pressure-resistant blasting testing machine, which comprises a frame, three groups of test pieces are installed on the frame, each group of test pieces comprises an upper end socket, a pipe, a lower end socket and a pressing device, the upper end socket and the lower end socket are respectively sleeved at the upper end and the lower end of the pipe, the upper end socket is provided with an exhaust valve, the lower end socket is provided with a water injection pipe, the pressing device comprises a pressurizing cylinder, a water injection pump, a transmission frame and a motor, two branch pipes are connected to the water injection pipe, one branch pipe is connected to the water injection pump, an electromagnetic valve is arranged in front of the water injection pump, the other branch pipe is connected to the pressurizing cylinder, the pressurizing cylinder comprises a sleeve and a piston push rod, the water injection pipe is connected with the sleeve, the front end of the piston push rod is installed in the sleeve, the piston push rod is connected with the motor through the transmission frame, and the static pressurizing mode of the piston push rod is used for enabling the testing process to be higher in precision, and avoiding equipment errors.

When the pipe is installed on the pipe pressure-resistant testing machine in the related art, workers are required to move the pipe between the upper sealing head and the lower sealing head, and the upper sealing head and the lower sealing head are sleeved at two ends of the pipe, so that the pipe is installed, inconvenience in operation is caused easily, the stability of the pipe installation is affected, and the testing effect is affected.

Disclosure of Invention

In order to facilitate the installation of the pipe and reduce adverse effects on the test effect, the utility model provides a pressure-resistant blasting test machine for the pipe.

The utility model provides a pressure-resistant blasting tester for pipes, which adopts the following technical scheme:

the utility model provides a tubular product withstand voltage blasting testing machine, includes the support body, be equipped with a plurality of upper ends and the lower head that correspond each other on the support body, the upper end grafting has the bleed pipe, upper end grafting and fixedly connected with inlet tube, the upper end with one side that the lower head is close to each other all is equipped with the stopper, the lower head is close to one side of upper end is equipped with the piston, the piston is located on the lower head the stopper is close to one end of upper end, the lower head is kept away from one side fixedly connected with cylinder of upper end, the telescopic link of cylinder passes the lower head and with piston fixed connection, the lower head with support body sliding connection, just be equipped with the drive on the support body the lower head is to being close to or keeping away from the driving piece that the direction of upper end removed.

Through adopting above-mentioned technical scheme, when using tubular product withstand voltage blasting testing machine, peg graft tubular product one end between the stopper on low head and low head, press from both sides tubular product tightly to increased the stability of tubular product, the direction that is close to the upper head through driving piece drive tubular product removes this moment, until the tubular product is kept away from the one end of low head and peg graft between the stopper on upper head and upper head, thereby install upper head and low head on the tubular product, thereby be convenient for install tubular product, make tubular product remain stable throughout in the removal process, reduce the adverse effect to test effect.

Optionally, an edge of the upper seal head, which is close to one side of the lower seal head, of the limiting block is provided with an inclined plane inclined towards a direction close to the rotation axis of the limiting block.

Through adopting above-mentioned technical scheme, when removing the direction that is close to the upper cover with tubular product, the inclined plane on the stopper on the upper cover makes the little one end of stopper diameter peg graft at first in tubular product, and tubular product continues to remove, and the inclined plane on the stopper is directed to tubular product this moment, and in the upper cover is pegged graft to the one end completion that the tubular product kept away from the lower cover, reduces the possibility that tubular product squints at the in-process that removes to seal tubular product both ends, further reach the effect of being convenient for install tubular product, reduce the adverse effect to experimental effect.

Optionally, the edge of the piston near one side of the upper end socket is provided with an inclined plane inclined towards the direction near the rotation axis of the piston, and the diameter of the piston is equal to that of the limiting block.

Through adopting above-mentioned technical scheme, when installing tubular product one end on lower end closure, the small one end of piston diameter is pegged graft at first in tubular product, continues to remove tubular product, and the inclined plane on the piston is directed to tubular product this moment until stopper on the lower end closure aligns with tubular product internal diameter, continues to remove tubular product, until stopper on the lower end closure is pegged graft in tubular product completely to the tubular product is convenient for install, reduces the adverse effect to experimental effect.

Optionally, one end of the air release pipe far away from the upper end enclosure is provided with a plugging plug for plugging the air release pipe, and one end of the plugging plug close to the air release pipe is in threaded connection with the air release pipe.

Through adopting above-mentioned technical scheme, when carrying out the test, water injection in to the tubular product, when having water to spill over in the gas release pipe, aim at and twist the shutoff stopper, until shutoff gas release pipe to seal the tubular product both ends, be convenient for the piston pressurizes and carries out the test to the water in the tubular product, thereby further seal the tubular product, reduce the adverse effect to test effect.

Optionally, the shutoff stopper includes the grafting and is in the gas vent and with gas vent lateral wall butt and threaded connection's grafting portion, grafting portion keep away from the one end fixedly connected with diameter of upper head is greater than grafting portion diameter's butt portion, set up in the grafting portion and run through the bleed hole of grafting portion, bleed hole one end is seted up grafting portion be close to the one end of upper head and with the gas vent intercommunication, the bleed hole other end is seted up grafting portion with on the lateral wall of gas vent butt, works as the gas vent passes through the bleed hole communicates with the external world, the one end that the bleed hole was kept away from the upper head is located the gas vent outside, just the bleed hole other end is arranged in the gas vent.

Through adopting above-mentioned technical scheme, when the water injection in to the tubular product, grafting portion peg graft in the gas vent and with gas vent threaded connection, the gas vent is greater than the gas vent and is kept away from the height of upper head one end this moment, when the gas vent is kept away from the one end of upper head and has water to spill over, twist the shutoff to the direction that is close to the upper head until with the gas vent shutoff to be convenient for with gas vent shutoff, improve shutoff efficiency.

Optionally, the driving piece include one end with the lead screw that the upper cover rotates to be connected, the lead screw other end pass the lower cover and with lower cover threaded connection, the lead screw is kept away from the one end of lower cover installs the motor, the motor with support body fixed connection.

Through adopting above-mentioned technical scheme, when driving tubular product and remove, motor drive lead screw rotates, and the lower head is moved to the direction that is close to the upper head under the drive of lead screw this moment, until install upper head and lower head at tubular product both ends to reduce the handheld tubular product of staff and install the possibility of upper head and lower head, further reach the effect of being convenient for install tubular product, reduce the adverse effect to experimental effect.

Optionally, a guide rod parallel to the length direction of the screw rod is arranged on one side of the frame body, which is close to the lower seal head, and the guide rod is inserted into one end of the lower seal head, which is close to the frame body, and is in sliding connection with the lower seal head.

Through adopting above-mentioned technical scheme, the in-process that screw drive low head removed, the one end that the low head is close to the support body slides along the length direction of guide bar, and the guide bar is spacing to the low head this moment, reduces low head along with screw pivoted possibility to further be convenient for install tubular product, reduce the effect to the adverse effect of experimental effect.

Optionally, a pressure sensor is arranged on one side of the piston away from the air cylinder, a control host is arranged on the frame body, the control host is in radio connection with the pressure sensor, and the control host is in electric connection with the air cylinder.

Through adopting above-mentioned technical scheme, when the cylinder drive piston pressurizes the water in the tubular product, pressure sensor will receive the pressure and pass through signal transmission to the control host computer, and when the tubular product was damaged under the continuous pressurization of water, pressure sensor received pressure was reduced and passed through signal transmission to the control host computer department, and the control host computer makes the telescopic link of cylinder stop moving this moment to be convenient for calculate the withstand voltage value of tubular product, improve test efficiency.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. one end of the pipe is inserted between the limiting blocks on the lower end enclosure and the lower end enclosure, and the pipe is clamped, so that the stability of the pipe is improved, the pipe is driven to move towards the direction close to the upper end enclosure through the driving piece until one end of the pipe, which is far away from the lower end enclosure, is inserted between the limiting blocks on the upper end enclosure and the upper end enclosure, and the upper end enclosure and the lower end enclosure are mounted on the pipe, so that the pipe is convenient to mount, the pipe is always stable in the moving process, and adverse effects on test effects are reduced;

2. when one end of the pipe is arranged on the lower seal head, the end with the small diameter of the piston is firstly inserted into the pipe, the pipe is continuously moved, at the moment, the inclined plane on the piston guides the pipe until the limiting block on the lower seal head is aligned with the inner diameter of the pipe, and the pipe is continuously moved until the limiting block on the lower seal head is completely inserted into the pipe, so that the pipe is convenient to install, and the adverse effect on the test effect is reduced;

3. when water is injected into the pipe, one end with small diameter of the plugging plug is inserted into the air release pipe and is in threaded connection with the air release pipe, at the moment, the height of one end of the air release hole, which is far away from the upper end socket, is larger than that of one end of the air release pipe, which is far away from the upper end socket, when water overflows from one end of the air release hole, the air release hole is screwed in the direction close to the upper end socket until the air release pipe is plugged, so that the air release pipe is plugged conveniently, and the plugging efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a pipe pressure-resistant blasting machine in an embodiment of the utility model.

Fig. 2 is a schematic structural view showing a positional relationship between a driving member and a piston in an embodiment of the present utility model.

Reference numerals illustrate: 1. a frame body; 11. a mounting plate; 12. a partition plate; 2. an upper end enclosure; 21. a blocking edge; 22. a fixed rod; 23. a gas release pipe; 24. sealing the plug; 241. a bleed hole; 25. a water inlet pipe; 3. a lower end enclosure; 31. a limiting block; 32. a moving rod; 321. a sliding groove; 33. a guide rod; 34. a piston; 35. a cylinder; 4. a driving member; 41. a screw rod; 42. a first bevel gear; 43. a second bevel gear; 44. a motor; 5. a pressure sensor; 6. and controlling the host.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The embodiment of the utility model discloses a pressure-resistant blasting testing machine for pipes. Referring to fig. 1 and 2, a pipe pressure-resistant blasting testing machine comprises a horizontal frame body 1, wherein a vertical mounting plate 11 is fixedly connected to one side, which is arranged along the length direction of the frame body 1, of the upper end of the frame body 1, and a plurality of upper sealing heads 2 which are horizontally and uniformly distributed are arranged at the upper end of one side, which is close to the frame body 1, of the mounting plate 11. One side of the upper seal head 2 close to the frame body 1 is fixedly connected with a circle of vertical baffle edges 21 arranged along the edge of the upper seal head 2, the upper seal head 2 is located at the upper end of the mounting plate 11, one side of the upper seal head 2 close to the mounting plate 11 is fixedly connected with a horizontal fixing rod 22, and one end of the fixing rod 22 away from the upper seal head 2 is fixedly connected with the mounting plate 11.

One side of the mounting plate 11, which is close to the frame body 1, is provided with a lower seal head 3 which is arranged opposite to the upper seal head 2 and is horizontal, the lower seal head 3 is positioned at one end of the mounting plate 11, which is close to the frame body 1, and the diameter of the lower seal head 3 is equal to that of the upper seal head 2. The baffle edge 21 that vertical and edge 3 of edge setting of following the low head is just fixed connection in one side that low head 3 is close to upper head 2 equally, and the equal fixedly connected with cylindric stopper 31 of one side that upper head 2 and low head 3 are close to each other, and the edge that the stopper 31 that is located on the upper head 2 is close to the one end of low head 3 all sets up to the inclined plane that inclines to the direction that is close to the axis of rotation of stopper 31. When the upper sealing head 2 and the lower sealing head 3 are arranged at two ends of a pipe, the side walls of the baffle edge 21 and the limiting block 31 which are positioned at the same end of the pipe are positioned at two sides of the side wall of the pipe, and the side wall of the pipe is abutted tightly.

Referring to fig. 1 and 2, a vertical air release pipe 23 is inserted and fixedly connected at the axial center of the upper end enclosure 2, the air release pipe 23 is inserted and connected at one end of the upper end enclosure 2 through the axial center of a limiting block 31 on the upper end enclosure 2 and fixedly connected with the limiting block 31, and a blocking plug 24 for blocking the air release pipe 23 is arranged at one end of the air release pipe 23 away from the upper end enclosure 2. One side of the upper sealing head 2 far away from the fixed rod 22 is spliced and fixedly connected with a water inlet pipe 25, and one end of the water inlet pipe 25 spliced in the upper sealing head 2 passes through a limiting block 31 on the upper sealing head 2 and is fixedly connected with the limiting block 31 on the upper sealing head 2. When the upper sealing head 2 is arranged on the pipe, the air release pipe 23 and the water inlet pipe 25 are communicated with the inside of the pipe.

The side of the lower seal head 3, which is close to the mounting plate 11, is fixedly connected with a horizontal moving rod 32, and the side of the mounting plate 11, which is close to the moving rod 32, is fixedly connected with three vertical guide rods 33 which are respectively matched with the lower seal head 3. The sliding grooves 321 are formed in one end, close to the guide rods 33, of the moving rods 32, the guide rods 33 are inserted into the corresponding sliding grooves 321, and the moving rods 32 slide along the length direction of the guide rods 33. The mounting plate 11 is provided with a driving member 4 for driving the moving rod 32 to slide. A horizontal piston 34 is arranged on one side of the lower seal head 3 close to the upper seal head 2, and the edge of one side of the piston 34 close to the upper seal head 2 is provided with an inclined surface inclined towards the direction close to the rotation axis of the piston 34.

Referring to fig. 1 and 2, the piston 34 is located on one side of the stopper 31 on the lower seal head 3 close to the upper seal head 2, and the diameter of the piston 34 is equal to the diameter of the stopper 31. One side of the lower sealing head 3, which is close to the frame body 1, is fixedly connected with an air cylinder 35, and a telescopic rod of the air cylinder 35 passes through the lower sealing head 3 and a limiting block 31 on the lower sealing head 3 and is fixedly connected with the axial center of the piston 34. When the lower seal head 3 is installed at the end of the pipe, the piston 34 is inserted into the pipe and is abutted against and slidingly connected with the side wall of the pipe.

When the pressure-resistant explosion testing machine for the pipe is used, one end of the pipe is moved towards the direction close to the lower seal head 3, at the moment, the end part of the pipe is firstly contacted with the piston 34 and continuously moves along the inclined plane on the side wall of the piston 34 until the pipe is completely aligned with the piston 34, at the moment, the pipe is continuously moved downwards until one side, close to each other, of the blocking edge 21 and the limiting block 31 on the lower seal head 3 is abutted against the side wall of the pipe, and the end part of the pipe is abutted against the side wall of the lower seal head 3, so that the pipe is installed on the lower seal head 3;

the driving piece 4 drives the moving rod 32 to drive the lower seal head 3 to move along the length direction of the guide rod 33 towards the direction close to the upper seal head 2, at the moment, the pipe moves along with the lower seal head 3 until the upper end of the pipe contacts with the inclined surface of the side wall of the limiting block 31 on the upper seal head 2, at the moment, the inclined surface on the upper seal head 2 further guides the pipe until the upper end of the pipe is aligned with the limiting block 31, at the moment, the lower seal head 3 continues to move until the upper end of the pipe is installed in the upper seal head 2 in the same manner, and therefore pipe installation is completed.

At this time, water is injected into the pipe through the water inlet pipe 25 until water overflows from the air release pipe 23, the air release pipe 23 is sealed through the sealing plug 24, the water inlet pipe 25 is closed, and at this time, the telescopic rod of the air cylinder 35 stretches and drives the piston 34 to move towards the direction close to the upper sealing head 2, so that the water in the pipe is pressurized, and the pressure-resistant explosion test of the pipe is conveniently completed.

Referring to fig. 1 and 2, the driving part 4 includes three screw rods 41 corresponding to the moving rods 32, respectively, one end of each screw rod 41 is inserted into the fixed rod 22 and rotatably connected to the fixed rod 22, and one end of each screw rod 41 remote from the fixed rod 22 passes through the moving rod 32 and is threadedly connected to the moving rod 32. One end of the screw 41, which is close to the fixed rod 22, is fixedly connected with a first bevel gear 42, one side of the first bevel gear 42, which is close to the mounting plate 11, is rotationally connected with a second bevel gear 43, one side, which is far away from the frame body 1, of the mounting plate 11 is fixedly connected with a motor 44, and an output shaft of the motor 44 penetrates through the mounting plate 11 and is fixedly connected with an axle center of the second bevel gear 43.

When the moving rod 32 is driven to move the lower sealing head 3, the motor 44 drives the second bevel gear 43 to drive the first bevel gear 42 to rotate, so that the screw 41 rotates, at the moment, the moving rod 32 in threaded connection with the screw 41 drives the lower sealing head 3 to move towards the direction close to the upper sealing head 2, and at the moment, the pipe moves along with the lower sealing head 3 towards the direction close to the upper sealing head 2, so that the upper sealing head 2 and the lower sealing head 3 are conveniently mounted on the pipe.

Referring to fig. 1 and 2, the cross section of the plug 24 in the vertical direction is set to be T-shaped, the plug 24 includes an abutting portion located at one end of the air release pipe 23 far from the upper end socket 2 and abutting against the end wall of the air release pipe 24, one end of the abutting portion close to the air release pipe 23 is fixedly connected with a plugging portion plugged in the air release pipe 23, the diameter of the plugging portion is smaller than that of the abutting portion, and the plugging portion is in threaded connection with the inner side wall of the air release pipe 23. Two air release holes 241 symmetrically arranged on two sides of the vertical rotation axis of the sealing plug 24 are formed in the plug-in part, and one end of the air release hole 241 close to the upper sealing head 2 is vertical and communicated with the inside of the air release pipe 23. The air vent 241 is kept away from the direction of keeping away from each other and is buckled to the one end that upper cover 2 was kept away from, and the one end that air vent 241 buckled is located the lateral wall of grafting portion circumference, and the one end that air vent 241 is located the lateral wall of grafting portion circumference is higher than the air vent 241 other end height.

When water is injected into the pipe, the small-diameter end of the plugging plug 24 is inserted into the air release pipe 23 and is in threaded connection with the air release pipe 23, at the moment, the height of one end of the air release hole 241, which is far away from the upper end enclosure 2, is larger than that of one end of the air release pipe 23, which is far away from the upper end enclosure 2, and when water overflows from one end of the air release hole 241, which is far away from the upper end enclosure 2, the plugging plug is screwed in the direction close to the upper end enclosure 2 until the air release pipe 23 is plugged, so that the air release pipe 23 is plugged, and the plugging efficiency is improved.

Referring to fig. 1 and 2, a horizontal pressure sensor 5 is fixedly connected to one end of a piston 34 close to the upper end socket 2, the pressure sensor 5 is waterproof, and a control host 6 is installed at one end of a mounting plate 11 close to one side of the frame body 1 and far from a guide rod 33. The pressure sensor 5 is in wireless radio connection with the control host 6, the partition plate 12 which is vertical and perpendicular to the mounting plate 11 is fixedly connected to the mounting plate 11, the partition plate 12 is positioned on one side, close to the guide rod 33, of the control host 6, and the lower end of the partition plate 12 is fixedly connected with the frame body 1.

When the cylinder 35 drives the piston 34 to pressurize water in the pipe, the pressure sensor 5 transmits the received pressure to the control host 6 through an electric signal, when the pipe is broken under the continuous pressurization of the water, the pressure received by the pressure sensor 5 is reduced and transmitted to the control host 6 through the electric signal, and at the moment, the control host 6 stops moving the telescopic rod of the cylinder 35, so that the possibility that the telescopic rod of the cylinder 35 continues to move is reduced, and the test efficiency is improved.

The implementation principle of the pipe pressure-resistant blasting testing machine provided by the embodiment of the utility model is as follows: the end part of the pipe is moved towards the direction approaching to the lower seal head 3 until one side, approaching to each other, of the baffle edge 21 and the limiting block 31 on the lower seal head 3 is abutted against the side wall of the pipe, and the end part of the pipe is abutted against the side wall of the lower seal head 3, so that the pipe is installed on the lower seal head 3, the motor 44 drives the screw rod 41 to drive the moving rod 32 to rotate, and at the moment, the lower seal head 3 and the pipe move along with the moving rod 32 towards the direction approaching to the upper seal head 2 until the upper end of the pipe is installed in the upper seal head 2, and the pipe installation is completed; at this time, water is injected into the pipe through the water inlet pipe 25 until water overflows in the air release pipe 23, the air release pipe 23 is sealed through the sealing plug 24, the water inlet pipe 25 is closed, at this time, the telescopic rod of the air cylinder 35 stretches and drives the piston 34 to move towards the direction close to the upper sealing head 2 until the pipe is exploded under water pressure, and the pressure-resistant explosion test of the pipe is completed.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a tubular product withstand voltage blasting testing machine, includes support body (1), be equipped with a plurality of upper cover (2) and low head (3) that correspond each other on support body (1), upper cover (2) peg graft have bleed pipe (23), upper cover (2) peg graft and fixedly connected with inlet tube (25), its characterized in that: the utility model discloses a seal head, including upper end enclosure (2), lower head (3), stopper (31) are all equipped with to one side that upper end enclosure (2) is close to each other, lower head (3) are close to one side of upper end enclosure (2) is equipped with piston (34), piston (34) are located on lower head (3) stopper (31) are close to one end of upper end enclosure (2), lower head (3) are kept away from one side fixedly connected with cylinder (35) of upper end enclosure (2), the telescopic link of cylinder (35) passes lower head (3) and with piston (34) fixed connection, lower head (3) with support body (1) sliding connection, just be equipped with the drive on support body (1) lower head (3) are close to or keep away from drive piece (4) that direction that upper end enclosure (2) removed.

2. The pipe pressure blast testing machine according to claim 1, wherein: the edge of one side, close to the lower seal head (3), of the limiting block (31) on the upper seal head (2) is provided with an inclined surface inclined towards the direction close to the rotation axis of the limiting block (31).

3. A pipe pressure blast testing machine according to claim 2, wherein: the edge of the piston (34) close to one side of the upper sealing head (2) is provided with an inclined surface inclined towards the direction close to the rotation axis of the piston (34), and the diameter of the piston (34) is equal to that of the limiting block (31).

4. The pipe pressure blast testing machine according to claim 1, wherein: one end of the air release pipe (23) far away from the upper sealing head (2) is provided with a blocking plug (24) for blocking the air release pipe (23), and one end of the blocking plug (24) close to the air release pipe (23) is in threaded connection with the air release pipe (23).

5. The pipe pressure blast testing machine according to claim 4, wherein: the plugging plug (24) comprises a plug part which is plugged into the air release pipe (23) and is in butt joint with the side wall of the air release pipe (23) and is in threaded connection, one end of the plug part, which is far away from the upper end socket (2), is fixedly connected with a butt part with the diameter larger than that of the plug part, an air release hole (241) penetrating through the plug part is formed in the plug part, one end of the air release hole (241) is formed in the plug part, which is close to one end of the upper end socket (2) and is communicated with the air release pipe, the other end of the air release hole (241) is formed in the side wall of the plug part, which is in butt joint with the air release pipe (23), and when the air release pipe (23) is communicated with the outside through the air release hole (241), one end, which is far away from the upper end socket (2), is located outside the air release pipe (23), and the other end of the air release hole (241) is located in the air release pipe (23).

6. The pipe pressure blast testing machine according to claim 1, wherein: the driving piece (4) comprises a screw rod (41) with one end rotationally connected with the upper end socket (2), the other end of the screw rod (41) penetrates through the lower end socket (3) and is in threaded connection with the lower end socket (3), a motor (44) is installed at one end, far away from the lower end socket (3), of the screw rod (41), and the motor (44) is fixedly connected with the frame body (1).

7. The pipe pressure blast testing machine according to claim 6, wherein: one side of the frame body (1) close to the lower seal head (3) is provided with a guide rod (33) parallel to the length direction of the screw rod (41), and the guide rod (33) is inserted into one end of the lower seal head (3) close to the frame body (1) and is in sliding connection with the lower seal head (3).

8. A pipe pressure blast testing machine according to claim 3, wherein: one side of the piston (34) far away from the air cylinder (35) is provided with a pressure sensor (5), the frame body (1) is provided with a control host machine (6), the control host machine (6) is in radio connection with the pressure sensor (5), and the control host machine (6) is electrically connected with the air cylinder (35).