A high-efficiency, energy-saving and safe test device suitable for ultra-low temperature conditions

Abstract

The invention discloses an efficient, energy-saving and safe testing device suitable for ultra-low temperature working conditions, belonging to the technical field of ball valve detection equipment. The invention discloses an efficient, energy-saving and safe testing device suitable for ultra-low temperature working conditions, comprising a base, a sealing detection box is fixed on the upper surface of the base, a low-temperature temperature control device is arranged inside the sealing detection box, a supporting column is fixed at the center of the inner bottom of the sealing detection box, a ball valve supporting seat is fixed on the top of the supporting column, a ball valve to be detected is supported on the ball valve supporting seat, and the sealing performance of the valve body of the ultra-low temperature ball valve can be detected in an ultra-low temperature environment, so as to detect whether the degree of cold shrinkage of the valve body at the corresponding temperature can meet the use requirements, and marks are left at the gaps by detection microspheres, so as not only the degree of cold shrinkage can be detected, but also the marks left by pigments can be used to mark the abnormal places of cold shrinkage, so that the staff can conveniently inspect and repair the abnormal places, thereby greatly improving the efficiency of abnormal cold shrinkage detection of ultra-low temperature ball valves.

Description

Technical Field

[0001] The present invention relates to the technical field of ball valve detection equipment, and more specifically to a high-efficiency, energy-saving and safe testing device suitable for ultra-low temperature working conditions. Background Art

[0002] Ultra-low temperature valves include cryogenic ball valves, cryogenic gate valves, cryogenic stop valves, cryogenic safety valves, cryogenic check valves, etc., which are mainly used in chemical plants such as 300,000 tons of ethylene and liquefied natural gas. The output liquid cryogenic media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products, etc. are not only flammable and explosive, but also gasify when heated. When gasified, the volume expands hundreds of times. The material of liquefied natural gas valves is very important. Unqualified materials will cause external or internal leakage of the shell and sealing surface; the comprehensive mechanical properties, strength and rigidity of the parts cannot meet the use requirements or even break. Leakage of liquefied natural gas medium causes explosion. Therefore, in the process of developing, designing and manufacturing liquefied natural gas valves, the material is the primary key issue.

[0003] Ultra-low temperature ball valve is a kind of ultra-low temperature valve. After the ultra-low temperature ball valve is produced, it needs to be tested. In a low temperature environment, the valve body of the ball valve will shrink to a certain extent due to the decrease in ambient temperature, which will affect the sealing of the valve. Therefore, it is crucial to detect whether the ball valve body shrinks abnormally in a low temperature environment. However, there is no equipment in the prior art that can effectively detect abnormal shrinkage. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide an efficient, energy-saving and safe testing device suitable for ultra-low temperature working conditions, which can detect the sealing of the valve body of an ultra-low temperature ball valve in an ultra-low temperature environment, so as to detect whether the degree of shrinkage of the valve body at the corresponding temperature can meet the use requirements. By using detection microspheres to leave marks in the gaps, not only can the degree of shrinkage be detected, but also the marks left by the pigment can be used to mark abnormal shrinkage areas. The staff can easily inspect and repair the abnormal areas, which greatly improves the efficiency of detecting abnormal shrinkage of ultra-low temperature ball valves.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A high-efficiency, energy-saving and safe test device suitable for ultra-low temperature working conditions, comprising a base, a sealing detection box is fixed on the upper surface of the base, a low-temperature temperature control device is arranged inside the sealing detection box, a support column is fixed at the center of the inner bottom of the sealing detection box, a ball valve support seat is fixed on the top of the support column, a ball valve to be tested is supported on the ball valve support seat, two groups of positioning clamping seats are fixed on the inner top of the sealing detection box, a pressure pump is fixed on the left side of the upper surface of the base, a fan is arranged on the lower side of the pressure pump, and the fan is connected to the pressure pump, a plurality of storage boxes are arranged on the upper side of the pressure pump, and different storage boxes are filled with detection microspheres with different particle sizes. A connecting pipe is connected between the storage box and the pressure pump, and a one-way valve is provided on the connecting pipe, an air intake telescopic hose is connected to the outlet of the pressure pump, a collecting box is fixed to the right end of the upper surface of the base, an air outlet telescopic hose is connected between the collecting box and the sealing detection box, both ends of the inner bottom of the base are slidably connected with sliders, a vertical rod is fixed to the top of the slider, an air intake joint is fixed to the top of the vertical rod close to the air intake telescopic hose, and an air outlet joint is fixed to the top of the vertical rod close to the air outlet telescopic hose, the air intake telescopic hose is connected to the air intake joint, the air outlet telescopic hose is connected to the air outlet joint, and airbag sealing rings are fixed on the outer walls of the air intake joint and the air outlet joint. When using the device to detect the ultra-low temperature ball valve, first place the ball valve to be detected on the ball valve support seat, use the positioning clamp seat to tightly fix the ball valve to be detected, then pull the vertical rods on both sides to respectively clamp the air inlet joint and the air outlet joint into the two ends of the ball valve to be detected, and use the airbag sealing ring to seal the connection, then set the temperature inside the sealing detection box, and then perform the detection; during the detection, use the fan to inflate the inside of the ball valve to be detected and collect it by the collection box. Since a plurality of storage boxes are provided, and detection microspheres with different particle sizes are provided inside the storage boxes, detection microspheres with different particle sizes are sequentially introduced from small to large in order, and the detection microspheres enter the inside of the pressure pump to mix with the air, and enter the inside of the ball valve to be detected through the pressure of the pressure pump. After the inflation is completed, the presence or absence of the detection microspheres in the collection box can detect the sealing of the ball valve to be detected under ultra-low temperature conditions, thereby detecting the degree of cold shrinkage of the ball valve body under ultra-low temperature conditions, and the detection result is accurate and the detection efficiency is high.

[0009] Furthermore, a plurality of evenly distributed coloring detection structures are provided on the outer wall of the detection microsphere, and the coloring detection structure includes a cavity opened on the detection microsphere, a thermal insulation barrier film is fixed inside the cavity, a thin film storage ball is provided inside the cavity on the inner side of the thermal insulation barrier film, the thin film storage ball is filled with low-temperature resistant pigment, the thin film storage ball is connected to a thermal insulation capillary, and the thermal insulation capillary is an elastic structure, a fixing rod is provided inside the cavity on the outer side of the thermal insulation barrier film, and a plurality of glass balls are fixed on the fixing rod, a plurality of puncture needles corresponding to the glass balls are fixed on the outermost inner wall of the cavity, and a discharge microhole is also provided on the outer wall of the detection microsphere. During the detection process, when the degree of shrinkage is large at a certain point in the valve body and the detection microball passes through the tiny gap created by it, the detection microball will be squeezed. During the squeezing, the inside of the cavity will be deformed, and the puncture needle will puncture the glass ball to make it break. The debris produced after the glass ball breaks will squeeze the thermal insulation barrier film to puncture the thermal insulation barrier film, and further puncture the film storage ball. The pigment inside the film storage ball leaks out and overflows through the thermal insulation capillary and the discharge micropores, leaving marks at the gap. Not only can the degree of shrinkage be detected, but also the marks left by the pigment can be used to mark the abnormal shrinkage. The staff can easily inspect the abnormal parts, which greatly improves the efficiency of abnormal shrinkage detection of ultra-low temperature ball valves.

[0010] Furthermore, the detection microspheres are made of heat-insulating materials, which can effectively adapt to the low-temperature environment inside the sealed detection box and effectively prevent the pigment filled inside the film storage ball from solidifying and affecting the detection.

[0011] Furthermore, the glass ball is a hollow glass ball, so that when the detection microsphere is squeezed, the puncture needle can puncture the glass ball in time, thereby effectively improving the detection accuracy.

[0012] Furthermore, the film storage balls in the detection microspheres of different particle sizes are filled with low-temperature resistant pigments of different colors, which is convenient for staff to distinguish.

[0013] Furthermore, the detection microsphere is a hollow structure, and the cavity of the detection microsphere is filled with helium, which can greatly reduce the overall mass of the detection microsphere and ensure the accuracy of the detection.

[0014] Furthermore, the positioning clamping seat includes an electric push rod fixed to the top of the sealing detection box, an arc seat is fixed to the output end of the electric push rod, a low-temperature resistant rubber pad is bonded to the inner wall of the arc seat, and the length of the positioning clamping seat can be conveniently controlled by using the length-adjustable electric push rod. The positioning clamping seats arranged on both sides can conveniently clamp and position the ball valve to be tested to ensure the normal progress of the test.

[0015] Furthermore, the airbag sealing ring includes a fixing ring fixed on the outer wall of the air inlet joint, an annular groove is provided on the outer ring wall of the fixing ring, and an airbag is bonded to the inner bottom of the annular groove, a low-temperature resistant rubber ring is bonded to the outer ring of the airbag, and an inflation connector for inflating and deflating the airbag is also provided on the outer wall of the fixing ring. When the airbag sealing ring is inserted into the interior of the ball valve to be tested, the airbag is inflated to expand it, and the inflated airbag and the low-temperature resistant rubber ring will cling to the inner wall of the ball valve to be tested, thereby achieving full sealing of the connection between the air inlet joint, the air outlet joint and the ball valve to be tested, thereby ensuring the sealing performance.

[0016] Furthermore, a detection switch door is provided on the front outer wall of the sealing detection box, which is convenient for taking and placing the ball valve to be detected for detection, thereby improving the detection efficiency.

[0017] Furthermore, the air inlet telescopic hose and the air outlet telescopic hose are both low-temperature resistant corrugated telescopic hoses, which can better adapt to the low-temperature environment inside the sealed detection box.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] (1) When using the device to detect the ultra-low temperature ball valve, first place the ball valve to be detected on the ball valve support seat, use the positioning clamp seat to tighten the ball valve to be detected, then pull the vertical rods on both sides to clamp the air inlet joint and the air outlet joint into the two ends of the ball valve to be detected, and use the airbag sealing ring to seal the connection. Then set the temperature inside the sealing detection box and perform the detection. During the detection, use the fan to inflate the inside of the ball valve to be detected and collect it by the collection box. Since there are multiple storage boxes, and detection microspheres with different particle sizes are set inside the storage boxes, detection microspheres with different particle sizes are introduced in sequence from small to large. The detection microspheres enter the inside of the pressure pump and mix with the air, and enter the inside of the ball valve to be detected through the pressure of the pressure pump. After the inflation is completed, the detection of whether there are detection microspheres in the collection box can detect the sealing of the ball valve to be detected under ultra-low temperature conditions, thereby detecting the degree of cold shrinkage of the ball valve body under ultra-low temperature conditions. The detection result is accurate and the detection efficiency is high.

[0021] (2) During the detection process, when the degree of shrinkage at a certain point in the valve body is large and the detection microsphere passes through the tiny gap created by it, the detection microsphere will be squeezed. During the squeezing, the inside of the cavity will deform, and the puncture needle will puncture the glass ball to make it break. The debris produced after the glass ball breaks will squeeze the thermal insulation barrier film to puncture the thermal insulation barrier film and further puncture the film storage ball. The pigment inside the film storage ball will leak out and overflow through the thermal insulation capillary and the discharge micropores, leaving marks at the gap. Not only can the degree of shrinkage be detected, but the marks left by the pigment can also be used to mark the abnormal shrinkage. The staff can easily inspect the abnormal part, which greatly improves the efficiency of abnormal shrinkage detection of ultra-low temperature ball valves.

[0022] (3) The detection microspheres are made of thermal insulation materials, which can effectively adapt to the low temperature environment inside the sealed detection box and effectively prevent the pigment filled inside the film storage ball from solidifying and affecting the detection.

[0023] (4) The glass ball is a hollow glass ball, which makes it easy for the puncture needle to pierce the glass ball in time when the microsphere is squeezed, effectively improving the detection accuracy.

[0024] (5) The film storage balls inside the different particle size detection microspheres are filled with low-temperature resistant pigments of different colors to facilitate staff to distinguish them.

[0025] (6) The detection microspheres are hollow structures, and the cavity of the detection microspheres is filled with helium, which can greatly reduce the overall mass of the detection microspheres and ensure the accuracy of the detection.

[0026] (7) The length of the positioning clamping seat can be conveniently controlled by using an adjustable electric push rod. The positioning clamping seats arranged on both sides can conveniently clamp and position the ball valve to be tested to ensure the normal progress of the test.

[0027] (8) After the airbag sealing ring is inserted into the ball valve to be tested, the airbag is inflated to expand. The inflated airbag and the low-temperature resistant rubber ring will cling to the inner wall of the ball valve to be tested, achieving full sealing of the connection between the air inlet joint, the air outlet joint and the ball valve to be tested, thereby ensuring the sealing performance.

[0028] (9) A detection switch door is provided on the front outer wall of the sealing detection box to facilitate the placement of the ball valve to be tested for testing and improve the detection efficiency.

[0029] (10) Both the air inlet telescopic hose and the air outlet telescopic hose are low-temperature resistant corrugated telescopic hoses, which can better adapt to the low-temperature environment inside the sealed test box. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a front view of the present invention;

[0031] Figure 2It is a structural schematic diagram of the positioning clamping seat in the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the airbag sealing ring in the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the detection microsphere in the present invention;

[0034] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0035] Description of the numbers in the figure:

[0036] 1 base, 2 sealing detection box, 3 support column, 4 ball valve support seat, 5 ball valve to be detected, 6 positioning clamping seat, 601 electric push rod, 602 arc seat, 603 low temperature resistant rubber pad, 7 pressure pump, 8 fan, 9 storage box, 10 detection microsphere, 11 connecting pipe, 12 one-way valve, 13 air inlet telescopic hose, 14 air inlet joint, 15 vertical rod, 16 slider, 17 air bag sealing ring, 171 fixing ring, 172 air bag, 173 low temperature resistant rubber ring, 18 air outlet joint, 19 air outlet telescopic hose, 20 collecting box, 21 coloring detection structure, 211 cavity, 212 film storage ball, 213 thermal insulation barrier film, 214 thermal insulation capillary, 215 fixing rod, 216 glass ball, 217 puncture needle, 218 discharge micropore. DETAILED DESCRIPTION

[0037] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Embodiment 1:

[0041] See also Figure 1A high-efficiency, energy-saving and safe test device suitable for ultra-low temperature working conditions comprises a base 1, a sealing detection box 2 is fixed on the upper surface of the base 1, a low-temperature temperature control device is arranged inside the sealing detection box 2, a support column 3 is fixed at the center of the inner bottom of the sealing detection box 2, a ball valve support seat 4 is fixed on the top of the support column 3, a ball valve 5 to be tested is supported on the ball valve support seat 4, two groups of positioning clamping seats 6 are fixed on the inner top of the sealing detection box 2, a pressure pump 7 is fixed on the left side of the upper surface of the base 1, a fan 8 is arranged on the lower side of the pressure pump 7, and the fan 8 is connected to the pressure pump 7, a plurality of storage boxes 9 are arranged on the upper side of the pressure pump 7, different storage boxes 9 are filled with detection microspheres 10 with different particle sizes, and a connecting rod is connected between the storage box 9 and the pressure pump 7. A through pipe 11 is provided with a one-way valve 12, an air intake telescopic hose 13 is connected to the outlet of the pressure pump 7, a collecting box 20 is fixed to the right end of the upper surface of the base 1, an air outlet telescopic hose 19 is connected between the collecting box 20 and the sealing detection box 2, sliders 16 are slidably connected to both ends of the inner bottom of the base 1, a vertical rod 15 is fixed to the top of the slider 16, an air intake connector 14 is fixed to the top of the vertical rod 15 close to the air intake telescopic hose 13, and an air outlet connector 18 is fixed to the top of the vertical rod 15 close to the air outlet telescopic hose 19, the air intake telescopic hose 13 is connected to the air intake connector 14, the air outlet telescopic hose 19 is connected to the air outlet connector 18, and airbag sealing rings 17 are fixed to the outer walls of the air intake connector 14 and the air outlet connector 18. When using the device to detect the ultra-low temperature ball valve, first place the ball valve 5 to be detected on the ball valve support seat 4, use the positioning clamping seat 6 to fix the ball valve 5 to be detected, then pull the vertical rods 15 on both sides to respectively clamp the air inlet joint 14 and the air outlet joint 18 into the two ends of the ball valve 5 to be detected, and use the airbag sealing ring 17 to seal the connection, and then set the temperature inside the sealing detection box 2 to perform the detection; during the detection, use the fan 8 to inflate the inside of the ball valve 5 to be detected and collect it in the collection box 20. A plurality of storage boxes 9 are provided, and detection microspheres 10 with different particle sizes are arranged inside the storage boxes 9. The detection microspheres 10 with different particle sizes are introduced in sequence from small to large. The detection microspheres 10 enter the pressure pump 7 to mix with the air, and enter the ball valve 5 to be tested through the pressure of the pressure pump 7. After the inflation is completed, the detection collection box 20 is detected to detect whether there are detection microspheres 10 inside to detect the sealing performance of the ball valve 5 to be tested under ultra-low temperature conditions, thereby detecting the degree of cold shrinkage of the ball valve body under ultra-low temperature conditions. The detection result is accurate and the detection efficiency is high.

[0042] See also Figure 4-5A plurality of evenly distributed coloring detection structures 21 are provided on the outer wall of the detection microsphere 10, and the coloring detection structure 21 includes a cavity 211 opened on the detection microsphere 10, and a thermal insulation barrier film 213 is fixed inside the cavity 211, and a film storage ball 212 is provided inside the cavity 211 on the inner side of the thermal insulation barrier film 213, and the film storage ball 212 is filled with low-temperature resistant pigments, and the film storage ball 212 is connected to a thermal insulation capillary 214, and the thermal insulation capillary 214 is an elastic structure, and a fixing rod 215 is provided inside the cavity 211 on the outer side of the thermal insulation barrier film 213, and a plurality of glass balls 216 are fixed on the fixing rod 215, and a plurality of puncture needles 217 corresponding to the glass balls 216 are fixed on the outermost inner wall of the cavity 211, and a discharge microhole 218 is also provided on the outer wall of the detection microsphere 10. During the detection process, when the degree of shrinkage is large at a certain point in the valve body and the detection microsphere 10 passes through the tiny gap created by it, the detection microsphere 10 will be squeezed. During the squeezing, the inside of the cavity 211 will be deformed, and the puncture needle 217 will puncture the glass ball 216 to break the glass ball 216. The debris generated after the glass ball 216 breaks will squeeze the thermal insulation barrier film 213 to puncture the thermal insulation barrier film 213, and further puncture the film storage ball 212. The pigment inside the film storage ball 212 leaks out and overflows through the thermal insulation capillary 214 and the discharge micropore 218, leaving marks at the gap. Not only can the degree of shrinkage be detected, but also the marks left by the pigment can be used to mark the abnormal shrinkage. The staff can easily inspect the abnormal area, which greatly improves the efficiency of abnormal shrinkage detection of ultra-low temperature ball valves.

[0043] See also Figure 4-5 The detection microsphere 10 is made of heat-insulating material, which can effectively adapt to the low temperature environment inside the sealed detection box 2 and effectively prevent the pigment filled inside the film storage ball 212 from solidifying and affecting the detection.

[0044] See also Figure 4-5 The glass ball 216 is a hollow glass ball, which is convenient for detecting that when the microsphere 10 is squeezed, the puncture needle 217 punctures the glass ball 216 in time, thereby effectively improving the detection accuracy.

[0045] See also Figure 4-5 The film storage balls 212 in the different particle size detection microspheres 10 are filled with low temperature resistant pigments of different colors to facilitate the staff to distinguish them.

[0046] See also Figure 4-5 The detection microsphere 10 is a hollow structure, and the cavity of the detection microsphere 10 is filled with helium, which can greatly reduce the overall mass of the detection microsphere 10 and ensure the accuracy of the detection.

[0047] See also Figure 2The positioning clamping seat 6 includes an electric push rod 601 fixed to the top of the sealing detection box 2, an arc seat 602 is fixed to the output end of the electric push rod 601, and a low-temperature resistant rubber pad 603 is bonded to the inner wall of the arc seat 602. The length of the positioning clamping seat 6 can be conveniently controlled by using the electric push rod 601 with adjustable length. The positioning clamping seats 6 arranged on both sides can conveniently clamp and position the ball valve 5 to be tested to ensure the normal progress of the test.

[0048] See also Figure 3 The airbag sealing ring 17 includes a fixing ring 171 fixed on the outer wall of the air inlet joint 14, an annular groove is provided on the outer ring wall of the fixing ring 171, and an airbag 172 is bonded to the bottom of the annular groove, and a low-temperature resistant rubber ring 173 is bonded to the outer ring of the airbag 172. An inflation connector for inflating and deflation of the airbag 172 is also provided on the outer wall of the fixing ring 171. When the airbag sealing ring 17 is inserted into the ball valve 5 to be tested, the airbag 172 is inflated to expand it. The expanded airbag 172 and the low-temperature resistant rubber ring 173 will cling to the inner wall of the ball valve 5 to be tested, thereby achieving full sealing of the connection between the air inlet joint 14, the air outlet joint 18 and the ball valve 5 to be tested, thereby ensuring the sealing performance.

[0049] See also Figure 1 A detection switch door is provided on the front outer wall of the sealing detection box 2, which is convenient for taking and placing the ball valve 5 to be detected for detection, thereby improving the detection efficiency.

[0050] See also Figure 1 The air inlet telescopic hose 13 and the air outlet telescopic hose 19 are both low-temperature resistant corrugated telescopic hoses, which can better adapt to the low-temperature environment inside the sealing detection box 2.

[0051] The above is only a preferred specific implementation manner of the present invention; but the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A high-efficiency, energy-saving and safe test device suitable for ultra-low temperature working conditions, comprising a base (1), a sealing detection box (2) being fixed on the upper surface of the base (1), characterized in that: The sealing detection box (2) is provided with a low-temperature temperature control device inside. A support column (3) is fixed at the center of the inner bottom of the sealing detection box (2). A ball valve support seat (4) is fixed at the top of the support column (3). A ball valve (5) to be detected is supported on the ball valve support seat (4). Two groups of positioning clamping seats (6) are fixed at the inner top of the sealing detection box (2). A booster pump (7) is fixed on the left side of the upper surface of the base (1). A fan (8) is provided on the lower side of the booster pump (7), and the fan (8) is connected to the booster pump (7). A plurality of storage boxes (9) are provided on the upper side of the booster pump (7). Different storage boxes (9) are filled with detection microspheres (10) of different particle sizes. A connecting pipe (11) is connected between the storage box (9) and the booster pump (7), and a one-way valve (12) is provided on the connecting pipe (11). An air inlet telescopic hose (13) is connected to the outlet of the pressure pump (7); a collecting box (20) is fixed to the right end of the upper surface of the base (1); an air outlet telescopic hose (19) is connected between the collecting box (20) and the sealing detection box (2); sliders (16) are slidably connected to both ends of the inner bottom of the base (1); a vertical rod (15) is fixed to the top of the slider (16); an air inlet joint (14) is fixed to the top of the vertical rod (15) close to the air inlet telescopic hose (13); and an air outlet joint (18) is fixed to the top of the vertical rod (15) close to the air outlet telescopic hose (19); the air inlet telescopic hose (13) is connected to the air inlet joint (14); the air outlet telescopic hose (19) is connected to the air outlet joint (18); and airbag sealing rings (17) are fixed to the outer walls of the air inlet joint (14) and the air outlet joint (18); A plurality of evenly distributed coloring detection structures (21) are provided on the outer wall of the detection microsphere (10), the coloring detection structure (21) comprising a cavity (211) opened on the detection microsphere (10), a heat-insulating barrier film (213) being fixed inside the cavity (211), a film storage ball (212) being provided inside the cavity (211) and located on the inner side of the heat-insulating barrier film (213), the film storage ball (212) being filled with low-temperature resistant pigment, and the film storage ball (212) being provided with a heat-insulating barrier film (213). 2) connected with a heat-insulating capillary tube (214), the heat-insulating capillary tube (214) being an elastic structure, a fixing rod (215) being provided inside the cavity (211) and located outside the heat-insulating barrier film (213), and a plurality of glass balls (216) being fixed on the fixing rod (215), a plurality of puncture needles (217) being arranged corresponding to the glass balls (216) being fixed on the outermost inner wall of the cavity (211), and a discharge microhole (218) being provided on the outer wall of the detection microsphere (10); The detection microsphere (10) is made of a heat-insulating material; The glass ball (216) is a hollow glass ball.

2. According to claim 1, a high-efficiency, energy-saving and safe test device suitable for ultra-low temperature conditions, characterized in that: The thin film storage balls (212) in the detection microspheres (10) of different particle sizes are filled with low-temperature resistant pigments of different colors.

3. According to claim 1, a high-efficiency, energy-saving and safe test device suitable for ultra-low temperature conditions, characterized in that: The detection microsphere (10) is a hollow structure, and the cavity of the detection microsphere (10) is filled with helium.

4. According to claim 1, a high-efficiency, energy-saving and safe test device suitable for ultra-low temperature conditions, characterized in that: The positioning clamping seat (6) comprises an electric push rod (601) fixed to the top of the sealing detection box (2), an arc seat (602) is fixed to the output end of the electric push rod (601), and a low-temperature resistant rubber pad (603) is bonded to the inner wall of the arc seat (602).

5. According to claim 1, a high-efficiency, energy-saving and safe test device suitable for ultra-low temperature conditions, characterized in that: The airbag sealing ring (17) comprises a fixing ring (171) fixed on the outer wall of the air inlet joint (14); an annular groove is provided on the outer wall of the fixing ring (171); an airbag (172) is bonded to the bottom of the annular groove; a low-temperature resistant rubber ring (173) is bonded to the outer ring of the airbag (172); and an inflation joint for inflating and deflation of the airbag (172) is also provided on the outer wall of the fixing ring (171).

6. The high-efficiency, energy-saving and safe test device suitable for ultra-low temperature conditions according to claim 1, characterized in that: A detection switch door is provided on the front outer wall of the sealing detection box (2).

7. The high-efficiency, energy-saving and safe test device suitable for ultra-low temperature conditions according to claim 1 is characterized in that: The air inlet telescopic hose (13) and the air outlet telescopic hose (19) are both low-temperature resistant corrugated telescopic hoses.

Images