High-temperature clamp assembly pressure resistance test device

Abstract

The utility model provides a high-temperature clamp assembly pressure test device, which belongs to the technical field of aviation, and comprises an inner cavity assembly, an outer cavity assembly, a heating assembly and a measuring assembly, the inner cavity assembly comprises a convex joint guide pipe, a concave joint guide pipe, a clamp to be tested, a first connecting piece, a second connecting piece and a third connecting piece; the convex joint guide pipe and the concave joint guide pipe are connected through a metal sealing ring to form an inner cavity; the to-be-tested hoop is clamped and sleeved at the joint of the guide pipes; the second ends of the convex joint conduit and the concave joint conduit are respectively connected with the first connecting piece and the second connecting piece; the first connecting piece is connected with the third connecting piece; the fourth connecting pieces at the two ends of the corrugated pipe are connected with the first connecting piece and the second connecting piece to form an outer cavity. The thermocouple is arranged in the thermocouple pipe sleeve; the heating rod is arranged in the heating rod sleeve; the measuring assembly comprises a gas inlet pipe, a gas outlet pipe and a gas flow meter. According to the utility model, the gas leakage amount of the clamp to be measured under high-temperature and high-pressure gas working conditions can be accurately measured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of aviation technology, specifically relates to a high temperature clamp assembly pressure test device. BACKGROUND

[0002] The high temperature clamp assembly is an important part of the aircraft engine bleed air and other high temperature and high pressure gas systems, and plays a key role in the pipeline connection, medium transportation and sealing of the bleed air system. If the clamp assembly fails, not only the thrust of the engine will be lost, but also the bleed air system may fail, resulting in disastrous consequences.

[0003] Since the high temperature clamp assembly is used in a high temperature and high pressure environment, the sealing form of the high temperature clamp assembly can only choose the hard contact mode of metal end face and metal end face. In actual use, high pressure gas leakage or failure often occurs at the connection of two pipes of the high temperature clamp assembly. Therefore, it is very important to conduct high temperature and high pressure test on the high temperature clamp assembly. According to the test standard requirements, the pressure test of the high temperature clamp assembly detects the leakage of gas under the condition of 650 DEG C limit temperature and 30 MPa limit pressure, therefore, how to accurately measure the gas leakage of the high temperature clamp assembly is the key to the qualification of the pressure test. At present, for the high temperature and high pressure connecting clamp assembly used in aviation, the existing technology mainly detects whether the connecting clamp assembly will leak gas or whether the pipe will burst under high temperature and high pressure, and there is no test equipment that can accurately measure the leakage of high temperature and high pressure gas under the condition of specific limit high temperature and high pressure, which may cause great safety hazards in the actual application of the high temperature clamp assembly.

[0004] Therefore, it is necessary to design a high temperature clamp assembly pressure test device according to the working condition and test specification requirements of the high temperature clamp assembly. INVENTION CONTENTS

[0005] In view of the above shortcomings of the prior art, the utility model aims at providing a high temperature clamp assembly pressure test device, which is sealed by setting the inner cavity assembly and the outer cavity assembly, and the leaked gas in the inner cavity enters the outer cavity to form a steady flow. The heating assembly heats the gas in the inner cavity, and the measuring assembly accurately measures the leakage gas, so that the utility model has reasonable structure design and convenient operation, and can accurately measure the leakage gas of the clamp under high temperature and high pressure gas working condition in the experiment.

[0006] The utility model is realized by the following technical solutions:

[0007] The application discloses a high-temperature clamp assembly pressure test device which comprises an inner cavity assembly, an outer cavity assembly, a heating assembly and a measuring assembly; the inner cavity assembly comprises a male joint conduit, a female joint conduit, a clamp to be measured, a first connecting piece, a second connecting piece and a third connecting piece; the first ends of the male joint conduit and the female joint conduit are connected by a metal sealing ring to form an inner cavity; the clamp to be measured is sleeved on the connecting position of the conduits; the second end of the male joint conduit is connected with the first connecting piece, and the second end of the female joint conduit is connected with the second connecting piece; the first connecting piece is connected with the third connecting piece; the third connecting piece is provided with a thermocouple tube sleeve and a heating rod sleeve which extend into the inner cavity; the second connecting piece is arranged on a fixed base and is provided with an air inlet hole and an air outlet hole; the outer cavity assembly comprises a bellows and a fourth connecting piece; the fourth connecting pieces arranged at the two ends of the bellows are connected with the first connecting piece and the second connecting piece respectively to form an outer cavity; the heating assembly comprises a thermocouple and a heating rod; the thermocouple is arranged in the thermocouple tube sleeve and is connected with a temperature controller; the heating rod is arranged in the heating rod sleeve and is connected with a heating power supply; the measuring assembly comprises an air inlet pipe, an air outlet pipe and a gas flowmeter; the two ends of the air inlet pipe are connected with the air inlet hole and a high-pressure gas source respectively; the two ends of the air outlet pipe are connected with the air outlet hole and the gas flowmeter respectively, and the air outlet pipe is provided with a cooling assembly.

[0008] Preferably, the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece are all flange connecting piece structures and are coaxially arranged.

[0009] Preferably, the thermocouple tube sleeve and the heating rod sleeve are arranged in parallel and are fixedly connected with the third connecting piece; the thermocouple tube sleeve is located at a central position; a plurality of heating rod sleeves are arranged around the thermocouple tube sleeve in a ring structure; one end of the thermocouple tube sleeve and the heating rod sleeve located in the inner cavity is a closed structure; and one end of the thermocouple tube sleeve and the heating rod sleeve which is in communication with the third connecting piece is an open structure.

[0010] Preferably, the first connecting piece is provided with a central through hole, and the diameter of the central through hole is greater than the diameter of the ring structure surrounded by the plurality of heating rod sleeves.

[0011] Preferably, the third connecting piece is located outside the first connecting piece and is sealingly connected with the outer end surface of the first connecting piece through a graphite sealing ring and is fixed by a bolt.

[0012] Preferably, the outer end surfaces of the two fourth connecting pieces are sealingly connected with the inner end surfaces of the first connecting piece and the second connecting piece through graphite sealing rings and are fixed by bolts.

[0013] Preferably, the bellows is telescopic, and the inner diameter of the bellows is greater than the outer diameters of the female joint conduit and the male joint conduit.

[0014] Preferably, the air inlet pipe is fixedly connected with the air inlet hole and is in communication with the inner cavity, and the air outlet pipe is fixedly connected with the air outlet hole and is in communication with the outer cavity.

[0015] Preferably, the inner end face of the first connecting piece and the male joint conduit are fixedly connected by welding, and the inner end face of the second connecting piece and the female joint conduit are fixedly connected by welding.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1、The utility model discloses a cavity assembly is set up, through the telescopic disc -shaped bellows, the sealed cavity that can collect the leakage gas is formed to the outside of the hoop of being measured, and makes the leakage gas form relative steady -state, and when the gas is exported from the cavity, more conveniently ensure the accuracy of measured data.

[0018] 2、The utility model discloses a heating mode that sets up the built -in heating rod and thermocouple in the inner cavity formed by the female joint conduit and the male joint conduit, is sealed to the inner cavity of the hoop of being measured simultaneously, can realize heating to the internal gas, and can realize the monitoring and control of gas temperature.

[0019] 3、The utility model discloses a gas source measurement connecting piece is provided with the exhaust hole that is linked with the cavity, and is connected with the high -temperature air cooling assembly through the exhaust pipe, and the output leakage gas is reduced to the temperature of being suitable, makes the leakage high -temperature gas rapid cooling, prevents the high -temperature gas from impacting the gas flowmeter of cooling assembly rear end, causes the damage of flowmeter, can also improve the accuracy of gas flowmeter measurement.

[0020] 4、The utility model discloses a gas flowmeter is connected after the high -temperature air cooling assembly, makes the gas that leaks from the inner cavity form steady -flow through the exhaust pipe output in the cavity, and realizes the accurate measurement of gas leakage amount through the gas flowmeter that the exhaust pipe end is connected after the cooling assembly.

[0021] 5、The utility model discloses a plurality of graphite sealing rings are sealed and connected, and the sealing property of the inner cavity and the cavity is enhanced, so that the gas of the utility model only leaks from the inner cavity to the inner cavity from the metal sealing ring of conduit connecting place, and the collection of leakage gas is facilitated. DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of the utility model high -temperature hoop assembly pressure test device;

[0023] Figure 2 It is the inner cavity assembly and heating assembly connecting structure schematic diagram of the utility model;

[0024] Figure 3 It is the inner cavity assembly internal structure schematic diagram of the utility model;

[0025] Figure 4 It is the section view of the inner cavity assembly and the cavity assembly of the utility model;

[0026] Figure 5 The utility model discloses a measurement assembly structure schematic view.

[0027] Marked explanation in the drawing:

[0028] 1, temperature controller, 2, thermocouple, 3, the fourth connecting piece of bellows first end, 4, gas flowmeter, 5, exhaust pipe, 6, inlet pipe, 7, high-pressure gas source, 8, second connecting piece, 9, the fourth connecting piece of bellows second end, 10, bellows, 11, first connecting piece, 12, third connecting piece, 13, heating rod, 14, heating power supply, 15, the hoop to be measured, 16, female joint conduit, 17, metal seal ring, 18, male joint conduit, 19, heating rod sleeve, 20, graphite seal ring, 21, thermocouple tube sleeve, 22, fixed base, 23, cooling assembly. DETAILED DESCRIPTION

[0029] For the technical content, structural features, purposes achieved and beneficial effects of the utility model, the following will be described in detail in conjunction with the drawings of the specification.

[0030] The utility model discloses a kind of high-temperature hoop assembly pressure test device, for the hoop assembly used under the working condition of high temperature 650 °, high pressure 30 megapascal is carried out high-temperature high-pressure test, to accurately measure gas leakage amount. Figures 1 to 5 As shown in the figure, it includes inner cavity assembly, outer cavity assembly, heating assembly and measurement assembly.

[0031] Inner cavity assembly includes male joint conduit 18, female joint conduit 16, the hoop to be measured 15, first connecting piece 11, second connecting piece 8 and third connecting piece 12. The first end of male joint conduit 18 and female joint conduit 16 is connected by metal seal ring 17 to form inner cavity for inputting high-pressure gas, if gas leakage occurs during test, only leak from the position of metal seal ring 17. The hoop to be measured 15 is sleeved at the connecting place of male joint conduit 18 and female joint conduit 16, i.e. the outer circumference of the position of metal seal ring 17.

[0032] The second end of male joint conduit 18 is connected with first connecting piece 11, and the second end of female joint conduit is connected with second connecting piece 8 and fixed on fixed base 22 through second connecting piece 8. Specifically, the inner end surface of first connecting piece 11 is welded and fixed with the second end of male joint conduit 18 to play a sealing role, and the inner end surface of second connecting piece 8 is also welded and fixed with the second end of female joint conduit 16 to play a sealing role, and through welding and fixing, it can bear the pressure condition of input high-pressure gas. Second connecting piece 8 is arranged on fixed base 22, and second connecting 8 is provided with gas inlet hole and exhaust hole.

[0033] The first connecting piece 11 is connected with the third connecting piece 12, and the third connecting piece 12 is provided with a thermocouple tube sleeve 21 and a plurality of heating rod sleeve pipes 19 extending into the inner cavity. In the preferred embodiment of the utility model, the thermocouple tube sleeve 21 and the heating rod sleeve pipe 19 are arranged in parallel with each other and are fixedly connected to the third connecting piece 12 by welding. The thermocouple tube sleeve 21 is perpendicular to the end face of the third connecting piece 12 and is located at the central position of the third connecting piece 12. The plurality of heating rod sleeve pipes 19 are evenly distributed around the thermocouple tube sleeve 21 in a ring structure. The end of the thermocouple tube sleeve 21 and the heating rod sleeve pipe 19 at the inner cavity is a closed structure, and the end of the thermocouple tube sleeve 21 and the heating rod sleeve pipe 19 communicating with the third connecting piece 12 is an open structure to facilitate the insertion of the thermocouple 2 and the heating rod 13.

[0034] The first connecting piece 11 is provided with a central through hole, and the diameter of the central through hole is greater than the diameter of the ring structure surrounded by the plurality of heating rod sleeve pipes 19.

[0035] The third connecting piece 12 is located outside the first connecting piece 11 and is sealingly connected to the outer end face of the first connecting piece 11 through a graphite sealing ring 20 and is fixed by a bolt.

[0036] The outer cavity assembly includes a bellows 10 and fourth connecting pieces arranged at both ends of the bellows 10 and connected with the first connecting piece 11 and the second connecting piece 8 respectively to form an outer cavity for collecting leaked gas.

[0037] In the preferred embodiment of the utility model, the bellows 10 has a disc type structure and can be extended and retracted. The inner diameter of the bellows 10 is greater than the outer diameter of the female joint conduit 16 and the male joint conduit 18. The inner wall of the bellows 10 and the outer wall of the female joint conduit 16 and the male joint conduit 18 form an outer cavity, which facilitates the formation of stable flow of high-pressure gas leaked from the inner cavity in the outer cavity.

[0038] Specifically, the outer end faces of the fourth connecting pieces at both ends of the bellows 10 are sealingly connected to the inner end faces of the first connecting piece 11 and the second connecting piece 8 through graphite sealing rings 20 and are fixed by bolts.

[0039] In the utility model, the first connecting piece 11, the second connecting piece 8, the third connecting piece 12, the fourth connecting piece 3 at the first end of the bellows and the fourth connecting piece 9 at the second end of the bellows are all circular flange connecting piece structures and are coaxially arranged with the female joint conduit 16 and the male joint conduit 18.

[0040] The heating assembly includes a thermocouple 2 and a heating rod 13. The thermocouple 2 is arranged in the thermocouple tube sleeve 21 and is connected with a temperature controller 1. The heating rod 13 is arranged in the heating rod sleeve pipe 19 and is connected with a heating power supply 14. The test temperature of the heating rod 13 is 650°.

[0041] The measuring assembly comprises an air inlet pipe 6, an air outlet pipe 5 and a gas flow meter 4, and the second connecting piece 8 is provided with an air inlet hole and an air outlet hole. The air inlet pipe 6 is connected with the air inlet hole and a high-pressure gas source 7 at two ends respectively, and the gas pressure of the high-pressure gas source 7 is 30 MPa. The air outlet pipe 5 is connected with the air outlet hole and the gas flow meter 4 at two ends respectively. The air outlet pipe 5 is provided with a cooling assembly 23 for cooling the high-temperature gas output from the outer cavity, so as to facilitate the accurate measurement of the gas flow meter 4 on the leaked gas.

[0042] In the preferred embodiment of the utility model, the air inlet pipe 6 is fixedly connected with the air inlet hole by welding and is communicated with the inner cavity, and the air outlet pipe 5 is fixedly connected with the air outlet hole by welding and is communicated with the outer cavity, so that the welding fixing mode can play the fixing role and the sealing role when being impacted by the high-pressure gas.

[0043] The specific embodiment of the utility model is further described as follows:

[0044] A high-temperature clamp assembly pressure test device is provided with a disc-shaped bellows outside the high-temperature clamp assembly to form a sealed cavity outside the high-temperature clamp assembly. The cavity can collect the high-temperature gas leaked from the high-temperature clamp assembly and make the high-temperature gas form a relatively stable state.

[0045] Before the test, the thermocouple tube sleeve 21 and the heating rod sleeve 19 provided on the third connecting piece 12 of the device are inserted into the male joint conduit 18 through the center through hole on the first connecting piece 11, and then the third connecting piece 12 is sealed with the first connecting piece 11 through the graphite sealing ring 20 and is fixedly connected through the fixing bolt.

[0046] Then, the bellows 10 is in a compressed state, the fourth connecting piece 3 at the first end of the bellows is sealed with the first connecting piece 11 through the graphite sealing ring 10 and is fixedly connected through the fixing bolt.

[0047] Then, the bellows 10 is in a compressed state, the fourth connecting piece 3 at the first end of the bellows is sealed with the first connecting piece 11 through the graphite sealing ring 10 and is fixedly connected through the fixing bolt.

[0048] At this time, the bellows 10 is stretched, the fourth connecting piece 9 at the second end of the bellows is sealed with the second connecting piece 8 through the graphite sealing ring 20 and is fixedly connected through the fixing bolt to form an outer cavity of the leaked gas, so that the gas leaked in the inner cavity can flow stably in the outer cavity.

[0049] The second connecting piece 8 is fixed on the fixed base 22.

[0050] The air inlet hole located at the center of the second connecting piece 8 is communicated with the air inlet pipe 6, the air inlet pipe 6 is connected with the high-pressure gas source 7, and the high-pressure gas is input into the inner cavity. The exhaust hole arranged on the second connecting piece 8 is communicated with the outer cavity for collecting the leaked gas, the exhaust hole is communicated with the exhaust pipe 5, and the cooling assembly 23 is arranged on the exhaust pipe 5, so that the leaked high-temperature gas is cooled from high temperature to a suitable temperature, then passes through the gas flow meter 4 at the terminal end of the exhaust pipe 5 to measure the gas leakage flow, and finally the accurate measurement of the gas leakage amount of the to-be-measured clamp 15 as the high-temperature clamp is realized.

[0051] The heating assembly is connected, the heating rod is inserted into the heating rod sleeve, and the heating power supply provides power for the heating rod. The thermocouple is inserted into the thermocouple tube sleeve, the temperature controller is connected with the thermocouple to control the temperature of the cavity in the high-temperature connecting clamp, and the heating rod and the thermocouple heat and control the temperature of the gas in the inner cavity.

[0052] The above-described embodiments are only used for describing the preferred embodiments of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical scheme of the utility model made by the ordinary skilled in the art without departing from the design spirit of the utility model should fall within the protection scope determined by the claim of the utility model.

Claims

1. A high temperature clamp assembly pressure test device, characterized by: It comprises an inner cavity assembly, an outer cavity assembly, a heating assembly and a measuring assembly; The inner cavity assembly comprises a male joint conduit, a female joint conduit, a clamp to be measured, a first connecting piece, a second connecting piece and a third connecting piece; the first ends of the male joint conduit and the female joint conduit are connected by a metal sealing ring to form an inner cavity; the clamp to be measured is sleeved on the connecting part of the conduits; the second end of the male joint conduit is connected with the first connecting piece, and the second end of the female joint conduit is connected with the second connecting piece; the first connecting piece is connected with the third connecting piece; the third connecting piece is provided with a thermocouple tube sleeve and a heating rod sleeve which extend into the inner cavity; the second connecting piece is arranged on a fixed base and is provided with an air inlet hole and an air outlet hole; The outer cavity assembly comprises a bellows and a fourth connecting piece, and the fourth connecting pieces arranged at both ends of the bellows are connected with the first connecting piece and the second connecting piece respectively to form an outer cavity; The heating assembly comprises a thermocouple and a heating rod, the thermocouple is arranged in the thermocouple tube sleeve and is connected with a temperature controller; the heating rod is arranged in the heating rod sleeve and is connected with a heating power supply; The measuring assembly comprises an air inlet pipe, an air outlet pipe and a gas flowmeter, the air inlet pipe is connected with the air inlet hole and a high-pressure gas source respectively at both ends; the air outlet pipe is connected with the air outlet hole and the gas flowmeter respectively at both ends, and is provided with a cooling assembly.

2. The high temperature high pressure test device for a high temperature high pressure clamp assembly of claim 1, wherein: The first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece are all flange connecting piece structures and are coaxially arranged.

3. The high temperature high pressure test device for a high temperature high pressure clamp assembly of claim 1, wherein: The thermocouple tube sleeve and the heating rod sleeve are arranged in parallel and are fixedly connected with the third connecting piece, the thermocouple tube sleeve is located at the center, a plurality of heating rod sleeves are arranged around the thermocouple tube sleeve in a ring structure, one end of the thermocouple tube sleeve and the heating rod sleeve located in the inner cavity is a closed structure, and the other end of the thermocouple tube sleeve and the heating rod sleeve which communicates with the third connecting piece is an open structure.

4. The high temperature high pressure test device for a high temperature high pressure clamp assembly of claim 3, wherein: The first connecting piece is provided with a central through hole, and the diameter of the central through hole is greater than the diameter of the ring structure surrounded by the plurality of heating rod sleeves.

5. The high temperature high pressure test device for a high temperature high pressure clamp assembly of claim 2, wherein: The third connecting piece is located outside the first connecting piece and is sealingly connected with the outer end surface of the first connecting piece through a graphite sealing ring and is fixed by a bolt.

6. The high temperature high pressure test device for a high temperature high pressure clamp assembly of claim 2, wherein: The outer end surfaces of the two fourth connecting pieces are sealingly connected with the inner end surfaces of the first connecting piece and the second connecting piece through graphite sealing rings and are fixed by bolts.

7. The high temperature high pressure test device for a high temperature high pressure clamp assembly of claim 1, wherein: The bellows is telescopic, and the inner diameter of the bellows is greater than the outer diameters of the female joint conduit and the male joint conduit.

8. The high temperature high pressure test device for a high temperature high pressure clamp assembly of claim 2, wherein: The air inlet pipe is fixedly connected with the air inlet hole and communicates with the inner cavity, and the air outlet pipe is fixedly connected with the air outlet hole and communicates with the outer cavity.

9. The high temperature high pressure test device for a high temperature high pressure clamp assembly of claim 1, wherein: The inner end surface of the first connecting piece and the male joint conduit and the inner end surface of the second connecting piece and the female joint conduit are fixedly connected by welding.

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