CN212721961U

CN212721961U - Detection apparatus for hydraulic pressure pipe

Info

Publication number: CN212721961U
Application number: CN202021803673.8U
Authority: CN
Inventors: 吴缪宏; 张斌
Original assignee: Nanjing Xinmudike Hydraulic Technology Co ltd
Current assignee: Nanjing Xinmudike Hydraulic Technology Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-03-16
Anticipated expiration: 2030-08-25

Abstract

The utility model relates to a detection apparatus for hydraulic pressure pipe, the utility model relates to the field of hydraulic pressure pipe, the test platform comprises a support, be equipped with support frame and mount on the frame, be equipped with the air pump on the support frame, be equipped with the gas-supply pipe on the air pump, be equipped with tee bend pipe fitting on the gas-supply pipe, tee bend pipe fitting one end is connected with the branch pipe that awaits measuring, the other end is connected with standard branch pipe, be equipped with first quantitative subassembly on the standard branch pipe, be equipped with second quantitative subassembly on the branch pipe that awaits measuring, all be equipped with the. The problem that human eyes are difficult to judge when cracks and micropores on the hydraulic pipe are small is solved, the standard hydraulic pipe exists as a reference object, and the reliability of air tightness detection is improved.

Description

Detection apparatus for hydraulic pressure pipe

Technical Field

The application relates to the field of hydraulic pipes, in particular to a detection device of a hydraulic pipe.

Background

With the rapid development of the hydraulic pipe market in China, the application and research and development of related core production technologies become the focus of attention of enterprises in the industry. At present, in the hydraulic pipe detection process, the hydraulic pipe with damages such as cracks and micropores is not easy to be identified by naked eyes of an operator and is mixed into qualified products, so that the qualification rate of the hydraulic pipe is reduced, and the air tightness of the hydraulic pipe needs to be detected.

The utility model discloses a chinese utility model patent that publication number is CN211061120U discloses a hydraulic pressure union coupling detection device, including brace table, ceiling, pond and hydraulic pressure pipe body, the inside air pump that is provided with of ceiling, the output sealing connection of air pump has the hose, and the one end sealing connection of hose and hydraulic pressure pipe body is provided with electric telescopic handle on the ceiling, and the hydraulic pressure pipe body sets up on electric telescopic handle. When detecting, utilize electric telescopic handle to move hydraulic pressure pipe body to the pond in, aerify to hydraulic pressure pipe body at the start-up air pump, whether have the bubble to produce and then judge whether damaged hydraulic pressure pipe in the observation pond.

Aiming at the related technology, when the hydraulic pipe made of rubber is actually detected, when cracks and micropores on the hydraulic pipe placed in a water pool are small, water molecules can block leakage points and cannot generate bubbles, and the defect that the judgment is wrong through observation of human eyes exists.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the human eye observation and judgment of the hydraulic pipe are wrong, the application provides a detection device of the hydraulic pipe.

The application provides a detection device of hydraulic tube adopts following technical scheme:

a detection device of a hydraulic pipe comprises a machine base, a supporting frame and a fixed frame, wherein the supporting frame and the fixed frame are arranged on the machine base, an air pump is arranged on the support frame, an air delivery pipe is arranged on an air outlet nozzle of the air pump, a three-way pipe fitting is arranged at one end of the air delivery pipe far away from the air pump, one end of the three-way pipe fitting is connected with a branch pipe to be measured, the other end of the three-way pipe fitting is connected with a standard branch pipe, a first quantitative component for quantitative inflation is mounted on the standard branch pipe, a second quantitative component for quantitative inflation is arranged on the branch pipe to be tested, an outlet pipe to be tested and a standard outlet pipe are vertically arranged on the fixed frame, a standard hydraulic pipe is connected between the standard branch pipe and the standard outlet pipe, a hydraulic pipe to be tested is connected between the branch pipe to be tested and the outlet pipe to be tested, and the standard outlet pipe and the outlet pipe to be detected are respectively provided with a detection assembly for detecting the pressure difference between the standard hydraulic pipe and the hydraulic pipe to be detected.

By adopting the technical scheme, when the air tightness of the hydraulic pipe is detected, the standard hydraulic pipe is arranged on the standard branch pipe and the standard outlet pipe, the hydraulic pipe to be detected is arranged between the branch pipe to be detected and the outlet pipe to be detected, the air pump is opened at the moment, the first quantitative component and the second quantitative component are controlled to enable the standard hydraulic pipe and the hydraulic pipe to be detected to be filled with air with the same pressure, and the standard hydraulic pipe and the hydraulic pipe to be detected are statically kept for a period of time; if the detection assembly detects that the pressure in the hydraulic pipe to be detected and the pressure in the standard hydraulic pipe generate a pressure difference, the fact that the hydraulic pipe to be detected is damaged can be judged; the problem that when cracks and micropores on the hydraulic pipe are small, water molecules block leakage points to cause difficulty in generating bubbles, and human eyes cannot judge whether the hydraulic pipe is damaged or not is solved, so that the possibility of human judgment errors is reduced; the standard hydraulic pipe exists as a reference object, the influence of testing when the external environment and the work are different per se is reduced to the minimum, and the precision and the reliability of air tightness detection are improved.

Preferably, the second ration subassembly includes first pneumatic valve, dosing bottle and second pneumatic valve, first pneumatic valve, dosing bottle and second pneumatic valve set gradually on the branch pipe that awaits measuring, be equipped with the manometer that is used for detecting dosing bottle internal gas pressure on the dosing bottle, first ration subassembly is the same with second ration subassembly structure.

By adopting the technical scheme, when the hydraulic pipe to be tested and the standard hydraulic pipe are filled with gas, the gas pump is started firstly, the first pneumatic valve is opened, when the pressure gauge displays that the gas with the preset pressure value is filled in the quantitative bottle, the first pneumatic valve is closed, the second pneumatic valve is opened, and the gas in the quantitative bottle enters the hydraulic pipe; and when the detection is carried out, the third air pressure valve is opened.

Preferably, the detection assembly comprises a barometer arranged on the outlet pipe to be detected and the standard outlet pipe, and the barometer is positioned on one side of the fixed frame departing from the supporting frame.

By adopting the technical scheme, the pressure gauges are used for respectively detecting the pressure in the hydraulic pipe to be detected and the pressure in the standard hydraulic pipe, the readings of the pressure gauges are compared, and when the pressure in the hydraulic pipe to be detected is reduced, the damage of the hydraulic pipe to be detected can be judged.

Preferably, the detecting element is including setting up differential pressure transmitter and the differential pressure display control instrument on the frame, differential pressure transmitter is connected with differential pressure display control instrument electricity, the last two pressure interface that are equipped with of differential pressure transmitter, the one end that the support frame was kept away from to the outlet pipe that awaits measuring and standard outlet pipe all is equipped with the hose, two pressure interface of differential pressure transmitter stretch into respectively and connect in the hose, the inlet end portion of standard outlet pipe and the outlet pipe that awaits measuring all is equipped with the third atmospheric pressure valve.

Through adopting above-mentioned technical scheme, the third pneumatic valve is opened, and differential pressure transmitter will detect standard hydraulic pipe and the intraductal pressure of hydraulic pressure that awaits measuring to connect signal transmission to differential pressure display control instrument through the electricity, differential pressure display control instrument directly shows the intraductal pressure differential of two hydraulic pressures, convenient detection.

Preferably, be equipped with the flow distribution box on the support frame, one side that the flow distribution box deviates from the mount is equipped with first sleeve pipe, the branch pipe and the first sleeve pipe threaded connection of awaiting measuring, flow distribution box keeps away from and is equipped with a plurality of intake pipe on the terminal surface of the branch pipe one end of awaiting measuring, the quantitative subassembly of second sets up in the intake pipe, the outlet pipe that awaits measuring be equipped with a plurality of and with the intake pipe one-to-one, wait to examine the hydraulic pressure union coupling in the intake pipe.

By adopting the technical scheme, the gas in the branch pipe to be detected enters each hydraulic pipe to be detected through the shunting box, a plurality of hydraulic pipes can be detected simultaneously, and the detection efficiency is improved; the shunting box is in threaded connection with the branch pipe to be tested, so that the shunting box is convenient to disassemble and replace and is simple to install.

Preferably, the air outlet end parts of the standard branch pipe and the air inlet end parts of the standard outlet pipe and the outlet pipe to be detected are respectively provided with a rubber ring, and the rubber ring is provided with a plurality of layers of rubber sleeves capable of being overturned to the rubber sleeves along the axial direction of the rubber rings.

Through adopting above-mentioned technical scheme, with hydraulic pressure pipe suit on the rubber sleeve, when the internal diameter increase of hydraulic pressure pipe, on turning over the rubber sleeve that is close to hydraulic pressure pipe one side with the rubber sleeve that the multilayer set up, can adapt to the hydraulic pressure pipe of different internal diameter specifications.

Preferably, the standard branch pipe and the standard outlet pipe are respectively provided with a first fixing piece, the air inlet pipe and the outlet pipe to be tested are respectively provided with a second fixing piece, each second fixing piece comprises a second sleeve, the outer peripheral surface of each second sleeve is provided with elastic pieces along the two axial sides of the second sleeve, and one end of each elastic piece, which is far away from the second sleeve, is provided with an elastic buckle used for fastening the hydraulic pipe to be tested on the rubber sleeve; the first fixing piece and the second fixing piece are identical in structure.

By adopting the technical scheme, the elastic sheet has elasticity, and the elastic buckle can be loosened and fastened; the elastic buckle can fix the hydraulic pipe on the rubber sleeve, and the possibility that the hydraulic pipe falls off from the rubber sleeve is reduced.

Preferably, the base is provided with a guide groove along the length direction of the base, the base is rotatably connected with a screw rod in the guide groove, the bottom of the support frame is provided with a sliding block, the sliding block is provided with a screw hole, and the screw rod penetrates through the screw hole and is in threaded connection with the screw hole.

Through adopting above-mentioned technical scheme, rotate the screw rod, the drive slider slides along frame length direction, and then the drive support frame syntropy slides, can adjust the distance between support frame and the mount, adapts to the installation of the hydraulic pressure pipe of different length specifications, and application scope is wide, and the flexibility is high.

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

1. the problem that human eyes are difficult to judge when cracks and micropores on the hydraulic pipe are small is solved, and the standard hydraulic pipe exists as a reference object, so that the reliability of air tightness detection is improved;

2. the distance between support frame and the mount is adjustable, and the rubber circle can overturn, makes detection device can adapt to the detection of the hydraulic pressure pipe of different length and internal diameter.

Drawings

Fig. 1 is a schematic view of the entire structure of embodiment 1.

Fig. 2 is a schematic cross-sectional view of the slider structure according to embodiment 1.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a partially enlarged view at B in fig. 2.

Fig. 5 is a partially enlarged view at C in fig. 4.

Fig. 6 is an exploded view of the hydraulic pipe joint in embodiment 1.

FIG. 7 is a schematic view of the entire structure of embodiment 2.

Fig. 8 is a partial configuration diagram for embodying the third air pressure valve in embodiment 2.

Description of reference numerals: 1. a machine base; 11. a guide groove; 12. a screw; 13. a slider; 14. a screw hole; 15. a hand wheel; 16. a transverse plate; 2. a support frame; 21. an air pump; 22. an air outlet nozzle; 23. a gas delivery pipe; 24. a tee pipe fitting; 25. a branch pipe to be tested; 26. a standard branch pipe; 27. a fixing hoop; 3. a fixed mount; 31. an outlet pipe to be tested; 32. a standard outlet pipe; 34. a third pneumatic valve; 35. a standard hydraulic pipe; 36. a hydraulic pipe to be tested; 4. a first dosing assembly; 40. a second dosing assembly; 41. a first pneumatic valve; 42. a quantification bottle; 43. a pressure gauge; 44. a second pneumatic valve; 5. a detection component; 51. a barometer; 52. a differential pressure transmitter; 53. a differential pressure display control instrument; 54. a sleeve; 55. a hose; 56. a cover is turned; 6. a shunt box; 61. a first sleeve; 62. an air inlet pipe; 7. a rubber ring; 71. a rubber sleeve; 8. a second sleeve; 81. a spring plate; 82. an elastic buckle.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

Example one

Referring to fig. 1 and 2, a detection apparatus for hydraulic pressure pipe, the detection apparatus for hydraulic pressure pipe includes frame 1, be equipped with support frame 2 along frame 1 length direction on the frame 1, be fixed with mount 3 on the frame 1, support frame 2 sets up with mount 3 is perpendicular, be equipped with diaphragm 16 on the support frame 2 perpendicularly, fixedly connected with air pump 21 on the diaphragm 16, be connected with gas-supply pipe 23 on the gas outlet nozzle 22 of air pump 21, gas-supply pipe 23 keeps away from air pump 21 one end and is connected with tee bend pipe fitting 24, one of them exit linkage of tee bend pipe fitting 24 has standard branch pipe 26, another exit linkage has branch pipe 25 that awaits measuring, gas-supply pipe 23, standard branch pipe 26 and branch pipe 25 that awaits measuring all fix on support frame 2 through fixing hoop 27, install first quantitative subassembly 4 that is used.

Referring to fig. 2 and 3, threaded connection has first sleeve 61 on the branch pipe 25 that awaits measuring, and the one end that branch pipe 25 that awaits measuring was kept away from to first sleeve 61 is connected with cylindrical flow distribution box 6, and flow distribution box 6 cavity sets up, and flow distribution box 6 deviates from one side of first sleeve 61 and is connected with six intake pipes 62, and intake pipe 62 distributes along flow distribution box 6 axis circumference equidistance, and intake pipe 62 perpendicular to flow distribution box 6, and installs the inflated second ration subassembly 40 that is used for the ration on the intake pipe 62.

Referring to fig. 1 and 2, a standard outlet pipe 32 and six outlet pipes 31 to be tested are mounted on a fixed frame 3, the standard outlet pipe 32 and the outlet pipes 31 to be tested are both arranged perpendicular to the fixed frame 3, and the standard outlet pipe 32 and the outlet pipes 31 to be tested both penetrate through the end surface of the fixed frame 3 and extend out from the two sides of the fixed frame 3; the standard outlet pipe 32 corresponds to the standard branch pipe 26, the outlet pipe 31 to be detected corresponds to the air inlet pipe 62 one by one, a standard hydraulic pipe 35 is connected between the standard branch pipe 26 and the standard outlet pipe 32, and two ends of a hydraulic pipe 36 to be detected are respectively connected to the air inlet pipe 62 and the outlet pipe 31 to be detected; and one ends of the outlet pipe 31 to be detected and the standard outlet pipe 32, which are far away from the support frame 2, are respectively provided with a detection assembly 5, and the detection assemblies 5 are used for detecting the pressure in the hydraulic pipe 36 to be detected and the pressure in the standard hydraulic pipe 35.

Referring to fig. 1 and 2, during detection, two ends of a standard hydraulic pipe 35 are respectively connected to a standard branch pipe 26 and a standard outlet pipe 32, two ends of a hydraulic pipe 36 to be detected are respectively connected to an air inlet pipe 62 and an outlet pipe 31 to be detected, an air pump 21 is opened, and gas with the same pressure is filled in the standard hydraulic pipe 35 and the hydraulic pipe 36 to be detected by controlling a first quantitative assembly 4 and a second quantitative assembly 40, and the standard hydraulic pipe and the hydraulic pipe to be detected are kept still for a period of time; if the detection component 5 detects that the pressure in the hydraulic pipe 36 to be detected and the pressure in the standard hydraulic pipe 35 have a certain difference, it can be determined that the hydraulic pipe 36 to be detected is damaged. When the cracks and the micropores on the hydraulic pipe are small, whether the hydraulic pipe is damaged or not can be accurately judged by adopting the detection method; the standard hydraulic pipe 35 exists as a reference object, so that the influence of factors such as human or external factors is reduced, and the reliability of air tightness detection of the hydraulic pipe is improved.

Referring to fig. 2 and 3, the second quantitative assembly 40 includes a first pneumatic valve 41, a quantitative bottle 42 and a second pneumatic valve 44, the first pneumatic valve 41, the quantitative bottle 42 and the second pneumatic valve 44 are sequentially installed on the air inlet pipe 62, the quantitative bottle 42 is located between the first pneumatic valve 41 and the second pneumatic valve 44, and the quantitative bottle 42 is configured to fill equal-pressure gas into the standard hydraulic pipe 35 and the hydraulic pipe 36 to be measured, so as to eliminate errors; the metering bottles 42 are respectively provided with a pressure gauge 43 for detecting the air pressure in the metering bottles 42, and the reading surfaces of the pressure gauges 43 are arranged towards the direction of the second air pressure valve 44, so that the reading is convenient; the first quantitative assembly 4 and the second quantitative assembly 40 have the same structure, that is, the first pneumatic valve 41, the quantitative bottle 42 and the second pneumatic valve 44 are sequentially installed on the air inlet pipe 62, and the detailed description is omitted here.

Referring to fig. 2 and 4, the detection assembly 5 includes a barometer 51, sleeves 54 are welded at both ends of the standard outlet pipe 32 and the outlet pipe 31 to be detected, which are away from the support frame 2, the sleeves 54 play a role in sealing, and an air inlet end of the barometer 51 is in threaded connection with the sleeves 54; during detection, the barometers 51 detect the pressures in the hydraulic pipe 36 to be detected and the standard hydraulic pipe 35, and then the detection data of the two barometers 51 are compared to judge whether the hydraulic pipe 36 to be detected is damaged.

Referring to fig. 2 and 5, the air outlet end portions of the standard branch pipe 26 and the air inlet pipe 62 and the air inlet end portions of the outlet pipe 31 to be measured and the standard outlet pipe 32 are all provided with a rubber ring 7, the rubber ring 7 is provided with rubber sleeves 71 along two axial sides of the rubber ring 7, the rubber sleeves 71 are made of elastic rubber materials, the rubber sleeves 71 and the rubber ring 7 are integrally arranged, the rubber sleeves 71 close to one side of the hydraulic pipe are provided with one layer, the rubber sleeves 71 far away from one side of the hydraulic pipe are provided with three layers, the rubber sleeves 71 can be turned over towards the rubber sleeves 71 along the axial direction of the rubber ring 7 in the initial state, the hydraulic pipe sleeves are sleeved on the one layer of the rubber sleeves 71 in the initial state, when the inner diameter of the hydraulic pipe is increased, the three layers of the rubber.

Referring to fig. 2 and 6, a first fixing member for fixing the standard hydraulic pipe 35 is arranged on each of the standard branch pipe 26 and the standard outlet pipe 32, a second fixing member for fixing the hydraulic pipe 36 to be tested is arranged on each of the air inlet pipe 62 and the outlet pipe 31 to be tested, each second fixing member comprises a second sleeve 8, elastic pieces 81 are arranged on two sides of the outer peripheral wall of each second sleeve 8 along the axial direction of the air inlet pipe 62, semicircular elastic buckles 82 are arranged at ends of the two elastic pieces 81 far away from the second sleeve 8, the two elastic buckles 82 are matched with each other, the rubber sleeve 71 close to one side of the hydraulic pipe is positioned below the elastic buckles 82, the second sleeve 8 on the air inlet pipe 62 is positioned between the second air pressure valve 44 and the rubber ring 7, and the second sleeve 8 on the outlet pipe 31 to; the first fixing piece and the second fixing piece have the same structure, and are not described again; the hydraulic pipe is sleeved on the rubber sleeve 71, and the elastic buckle 82 fastens the hydraulic pipe, so that the hydraulic pipe cannot easily fall off.

Referring to fig. 1 and 2, a guide groove 11 extending along the length direction of a base 1 is formed in the base 1, a sliding block 13 is arranged at the bottom of a support frame 2, the sliding block 13 is connected with the guide groove 11 in a sliding manner, a screw hole 14 is formed in the sliding block 13 along the length direction of the base 1, a screw rod 12 is rotatably connected in the guide groove 11 in the base 1, the screw rod 12 penetrates through the screw hole 14 and is in threaded connection with the screw hole 14, one end of the screw rod 12 extends out of the base 1, and a hand wheel 15 is arranged at; the hand wheel 15 is rotated to drive the screw 12 to rotate, the sliding block 13 is driven to slide in the guide groove 11, the distance between the support frame 2 and the fixing frame 3 can be adjusted, and the detection device is suitable for detection of hydraulic pipes with different lengths and specifications.

The implementation principle of the first embodiment of the application is as follows: before detection, the standard hydraulic pipe 35 is installed on the rubber sleeves 71 on the air inlet pipe 62 and the standard outlet pipe 32, the six hydraulic pipes 36 to be detected are sequentially installed on the rubber sleeves 71 on the air inlet pipe 62 and the outlet pipe 31 to be detected, after installation is finished, the air pump 21 is started, the first air pressure valve 41 on the standard branch pipe 26 and the air inlet pipe 62 is opened, the pressure gauge 43 on the bottle 42 to be measured displays that the air pressure in the bottle 42 reaches a preset value, the first air pressure valve 41 is closed, and the second air pressure valve 44 is opened; standing for a period of time, displaying readings by the barometer 51, sequentially comparing the readings of the barometer 51 on the outlet pipe 31 to be tested with the readings of the barometer 51 on the standard outlet pipe 32, and if the readings of the barometer 51 on the outlet pipe 31 to be tested are smaller than the readings of the barometer 51 on the standard outlet pipe 32, judging that the hydraulic pipe 36 to be tested is damaged; if the reading of the barometer 51 on the outlet pipe 31 to be measured is the same as the reading of the barometer 51 on the standard outlet pipe 32, or the difference between the two is within a certain error range, it can be determined that the hydraulic pipe 36 to be measured is not damaged.

Example two

A detection device of a hydraulic pipe is different from the first embodiment, referring to fig. 7 and 8, a detection assembly 5 comprises a differential pressure transmitter 52 and a differential pressure display control instrument 53 which are arranged on a machine base 1, two pressure interfaces are arranged on the differential pressure transmitter 52, and the differential pressure transmitter 52 is electrically connected with the differential pressure display control instrument 53; the outlet pipe 31 to be detected and the standard outlet pipe 32 are both provided with a third air pressure valve 34 near the air inlet end, the standard outlet pipe 32 and the outlet pipe 31 to be detected are both connected with a hose 55 at the air outlet end, the lengths of the hoses 55 are the same, one end of the hose 55 far away from the fixed frame 3 is provided with a flip cover 56, and the flip cover 56 is used for sealing the hose 55 and eliminating the interference of the air in the hose 55 to the detection process; the differential pressure display control instrument 53 can directly display the pressure difference in the two hydraulic pipes, and can directly read the pressure difference, so that the hydraulic pipe is convenient and fast to use.

The implementation principle of the second embodiment of the present application is as follows: during detection, one pressure interface of the differential pressure transmitter 52 is connected with the hose 55 on the standard outlet pipe 32, the other pressure interface of the differential pressure transmitter 52 is connected with the hose 55 on the outlet pipe 31 to be detected, the third air pressure valve 34 is opened, the differential pressure transmitter 52 detects the pressure in the standard hydraulic pipe 35 and the pressure in the hydraulic pipe 36 to be detected, and the differential pressure display control instrument 53 directly displays the pressure difference value in the connected hydraulic pipes, so that the reading is directly carried out, and the convenience and the rapidness are realized; after the detection of one to-be-detected hydraulic pipe 36 is completed, the other pressure interface of the differential pressure transmitter 52 is connected with the remaining to-be-detected hydraulic pipes 36 and the hose 55 on the to-be-detected outlet pipe 31, and the remaining to-be-detected hydraulic pipes 36 are detected in sequence.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A detection device of hydraulic pipe, its characterized in that: the quantitative air pump comprises a machine base (1), a support frame (2) and a fixing frame (3), wherein the support frame (2) and the fixing frame (3) are arranged on the machine base (1), an air pump (21) is arranged on the support frame (2), an air delivery pipe (23) is arranged on an air outlet nozzle (22) of the air pump (21), a three-way pipe (24) is arranged at one end, away from the air pump (21), of the air delivery pipe (23), one end of the three-way pipe (24) is connected with a to-be-tested branch pipe (25), the other end of the three-way pipe is connected with a standard branch pipe (26), a first quantitative component (4) used for quantitative air inflation is arranged on the standard branch pipe (26), a second quantitative component (40) used for quantitative air inflation is arranged on the to-be-tested branch pipe (25), an outlet pipe (31) to be tested and a standard outlet pipe (32) are vertically, be used for connecting the hydraulic pressure pipe (36) that awaits measuring between branch pipe (25) and the outlet pipe (31) that awaits measuring, all be equipped with on standard outlet pipe (32) and the outlet pipe (31) that awaits measuring and be used for detecting detection subassembly (5) of pressure differential in standard hydraulic pressure pipe (35) and the hydraulic pressure pipe (36) that awaits measuring.

2. The apparatus according to claim 1, wherein: second ration subassembly (40) include first atmospheric pressure valve (41), dosing bottle (42) and second atmospheric pressure valve (44), first atmospheric pressure valve (41), dosing bottle (42) and second atmospheric pressure valve (44) set gradually on branch pipe (25) await measuring, be equipped with manometer (43) that are used for detecting dosing bottle (42) internal gas pressure on dosing bottle (42), first ration subassembly (4) are the same with second ration subassembly (40) structure.

3. The apparatus according to claim 1, wherein: the detection assembly (5) comprises a barometer (51) arranged on an outlet pipe (31) to be detected and a standard outlet pipe (32), and the barometer (51) is positioned on one side of the fixed frame (3) departing from the support frame (2).

4. The apparatus according to claim 1, wherein: detection component (5) are including setting up differential pressure transmitter (52) and differential pressure display control instrument (53) on frame (1), differential pressure transmitter (52) are connected with differential pressure display control instrument (53) electricity, be equipped with two pressure interface on differential pressure transmitter (52), the one end that support frame (2) were kept away from in outlet pipe (31) and standard outlet pipe (32) of awaiting measuring all is equipped with hose (55), two pressure interface of differential pressure transmitter (52) stretch into respectively and connect in hose (55), the inlet end portion of standard outlet pipe (32) and outlet pipe (31) of awaiting measuring all is equipped with third atmospheric pressure valve (34).

5. The apparatus according to claim 1, wherein: be equipped with branch flow box (6) on support frame (2), one side that branch flow box (6) deviates from mount (3) is equipped with first sleeve pipe (61), branch pipe (25) and first sleeve pipe (61) threaded connection await measuring, branch flow box (6) are kept away from and are equipped with a plurality of intake pipe (62) on the terminal surface of branch pipe (25) one end that awaits measuring, second ration subassembly (40) set up on intake pipe (62), the outlet pipe (31) that awaits measuring be equipped with a plurality of and with intake pipe (62) one-to-one, await measuring hydraulic pressure pipe (36) and connect in intake pipe (62) are last.

6. The apparatus according to claim 5, wherein: the air outlet end parts of the standard branch pipe (26) and the air inlet pipe (62), the air inlet end parts of the standard outlet pipe (32) and the outlet pipe (31) to be tested are respectively provided with a rubber ring (7), and the rubber ring (7) is provided with a plurality of layers of rubber sleeves (71) which can be axially turned over to the rubber sleeves (71) along the rubber ring (7).

7. The apparatus according to claim 6, wherein: the standard branch pipe (26) and the standard outlet pipe (32) are respectively provided with a first fixing piece, the air inlet pipe (62) and the outlet pipe (31) to be tested are respectively provided with a second fixing piece, each second fixing piece comprises a second sleeve (8), the outer peripheral surface of each second sleeve (8) is respectively provided with elastic sheets (81) along the two axial sides of each second sleeve (8), and one end, far away from the second sleeve (8), of each elastic sheet (81) is provided with an elastic buckle (82) used for fastening the hydraulic pipe (36) to be tested on the rubber sleeve (71); the first fixing piece and the second fixing piece are identical in structure.

8. The apparatus according to claim 1, wherein: guide slot (11) have been seted up along frame (1) length direction on frame (1), frame (1) internal rotation is connected with screw rod (12) in guide slot (11), support frame (2) bottom is equipped with slider (13), screw (14) have been seted up on slider (13), screw rod (12) run through screw (14) and with screw (14) threaded connection.