Nuclear magnetic resonance core analyzer

Abstract

The utility model discloses a nuclear magnetic resonance core analyzer and relates to the field of nuclear magnetic resonance. The nuclear magnetic resonance core analyzer comprises a cabinet, a case assembly and a magnetic field assembly, and an assembly cavity and a test cavity are arranged in the cabinet and are arranged in an isolated manner. According to the utility model, the cabinet assembly is assembled in the assembly cavity in the cabinet, the magnetic field assembly is assembled in the test cavity, and the assembly cavity and the test cavity are arranged in an isolated manner, so that the cabinet assembly and the magnetic field assembly are isolated and prevented from mutual influence; a spectrometer case, a radio frequency case, an electric control case and a gradient power amplifier case which are arranged in the case assembly in a laminated mode are convenient to assemble, any case comprises a case body, an upper cover plate and a sealing ring, the connection between the case body and the upper cover plate is sealed through the sealing ring, external corrosive salt mist, water vapor and other adverse factors are isolated, and the service life of the case body is prolonged. Therefore, electronic devices in the case can have a reliable working environment, and the service life of the nuclear magnetic resonance core analyzer is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of nuclear magnetic resonance, concretely relates to a nuclear magnetic resonance core analyzer. BACKGROUND

[0002] Nuclear magnetic resonance technology is a kind of fast, non-destructive testing technology widely used in petroleum exploration industry, and generally applied scene is in air-conditioned room, and there is higher requirement to working environment, generally requiring that environmental temperature is about 25 DEG C, humidity is not greater than 75%, and there is no salt mist gas etc. In response to the new demand of on-site exploration rapid evaluation, it needs to be used on site or used on offshore platform, and the environment is more complex and more severe, and higher requirement is put forward to nuclear magnetic resonance equipment, and there is large environmental temperature difference, relatively large humidity, and there is also corrosive salt mist water vapor and other complex and severe environment, and it has the risk of damaging internal electronic devices of nuclear magnetic resonance core analyzer. In the related art, there is no nuclear magnetic resonance core analyzer equipment for preventing salt mist, so it is necessary to carry out targeted salt mist prevention technical design on nuclear magnetic resonance core analyzer. SUMMARY

[0003] To solve the technical problems in the background art, the utility model provides a nuclear magnetic resonance core analyzer, which comprises:

[0004] A cabinet is provided with an assembly cavity and a test cavity, and the assembly cavity and the test cavity are isolated.

[0005] A cabinet assembly comprises a spectrometer cabinet, a radio frequency cabinet, an electric control cabinet and a gradient power amplifier cabinet arranged in the assembly cavity from top to bottom, any cabinet comprises a cabinet body, an upper cover plate and a sealing ring, the cabinet body is fixed in the assembly cavity, the upper cover plate is detachably arranged on the upper end of the cabinet body, and the sealing ring is arranged on the end faces of the cabinet body and the upper cover plate.

[0006] And a magnetic field assembly is installed in the test cavity.

[0007] As a preferred technical scheme, the spectrometer cabinet comprises a first cabinet body, a first sealing ring, a first upper cover plate, a first front panel and a first inner fixed plate, the first upper cover plate is arranged on the upper side opening of the first cabinet body, the first sealing ring is annularly and sealingly connected between the first cabinet body and the first upper cover plate, the first front panel is fixedly connected to the outer end face of the first cabinet body, and the first inner fixed plate is installed in the first cabinet body.

[0008] As a preferred technical scheme, the radio frequency case comprises a second case body, a second upper cover plate, a second sealing ring, a third case body, a first radiator, a second front panel and a first lower cover plate; the second upper cover plate is arranged on the upper opening of the second case body; the second sealing ring is annularly arranged and sealingly connected at the connection between the second case body and the second upper cover plate; the third case body is fixedly connected to the bottom of the second case body; the second case body and the third case body are arranged in isolation; the first radiator is installed in the third case body; and the first lower cover plate is spliced and combined at the lower end of the third case body.

[0009] As a preferred technical scheme, the electric control case comprises a fourth case body, a third upper cover plate, a third sealing ring, a third front panel and a second inner fixed plate; the third upper cover plate is arranged on the upper opening of the fourth case body; the third sealing ring is annularly arranged and sealingly connected at the connection between the fourth case body and the third upper cover plate; the third front panel is fixedly connected to the outer end surface of the fourth case body; and the second inner fixed plate is installed in the fourth case body.

[0010] As a preferred technical scheme, the gradient power amplifier case comprises a fourth upper cover plate, a fifth case body, a fourth sealing ring, a sixth case body, a second radiator, a fourth front panel and a second lower cover plate; the fourth upper cover plate is arranged on the upper opening of the fifth case body; the fourth sealing ring is annularly arranged and sealingly connected at the connection between the fifth case body and the fourth upper cover plate; the sixth case body is fixedly connected to the bottom of the fifth case body; the fifth case body and the sixth case body are arranged in isolation; the second radiator is installed in the sixth case body; and the second lower cover plate is spliced and combined at the lower end of the sixth case body.

[0011] As a preferred technical scheme, the magnetic field assembly comprises a radio frequency coil, a gradient coil and a magnet; the radio frequency coil is installed in the magnet; and the gradient coil is sleeved and arranged in the radio frequency coil.

[0012] As a preferred technical scheme, the radio frequency coil comprises a shielding cylinder, a front waveguide tube, a rear waveguide tube, a fifth sealing ring, a coil framework and a sixth sealing ring; the coil framework is connected between the front waveguide tube and the rear waveguide tube; the sixth sealing ring is arranged at the end of the coil framework towards the front waveguide tube; the fifth sealing ring is arranged at the end of the coil framework towards the front waveguide tube; and the shielding cylinder is sleeved outside the coil framework; and / or

[0013] The gradient coil comprises an outer cylinder, a seventh sealing ring, an inner cylinder and an eighth sealing ring; the outer cylinder is sleeved outside the inner cylinder; and the two ends of the outer cylinder and the inner cylinder are respectively sealingly abutted by the seventh sealing ring and the eighth sealing ring; and / or

[0014] The magnet comprises a combined frame body, and a mounting cavity is arranged in the combined frame body.

[0015] As a preferred technical scheme, the nuclear magnetic resonance core analyzer further comprises a carrier bed, the carrier bed comprises a support, a driving member, a moving slide rail and a core groove, the mounting end of the driving member is fixedly arranged with the support, the moving slide rail is arranged at the driving end of the driving member, the moving slide rail is slidably arranged with the support, and the core groove is fixedly connected to the moving slide rail.

[0016] As a preferred technical scheme, the cabinet comprises a frame, a rear opening door, a front guard plate, a rear guard plate, a bearing table, a damping member and a moving wheel, the frame is arranged with two cavities arranged apart from each other, so as to be arranged as the assembly cavity and the test cavity respectively, the assembly cavity is arranged above the test cavity;

[0017] The rear opening door is connected to one side of the assembly cavity, the front guard plate and the rear guard plate are oppositely arranged and connected to two sides of the test cavity.

[0018] The bearing table is fixedly connected to the bottom of the frame, at least one damping member is arranged in the bearing table, and the moving wheel is arranged at the bottom of the bearing table.

[0019] As a preferred technical scheme, the cabinet and the inner and outer walls of the case assembly are respectively provided with a salt mist resistant coating.

[0020] The technical scheme provided by the utility model has the following advantages:

[0021] The nuclear magnetic resonance core analyzer provided by the utility model comprises a cabinet, a case assembly and a magnetic field assembly, the cabinet is provided with an assembly cavity and a test cavity, and the assembly cavity and the test cavity are arranged apart from each other; the case assembly comprises a spectrometer case, a radio frequency case, an electric control case and a gradient power amplifier case which are arranged in the assembly cavity in a stacked manner from top to bottom, any case comprises a box body, an upper cover plate and a sealing ring, the box body is fixed in the assembly cavity, the upper cover plate is detachably arranged on the upper end of the box body, the sealing ring is abuttingly arranged on the end faces of the box body and the upper cover plate, and the magnetic field assembly is arranged in the test cavity.

[0022] The nuclear magnetic resonance core analyzer has the following advantages: the case assembly is assembled in the assembly cavity in the cabinet, the magnetic field assembly is assembled in the test cavity, the assembly cavity and the test cavity are arranged apart from each other, the case assembly and the magnetic field assembly are arranged apart from each other, and mutual influence is avoided; the spectrometer case, the radio frequency case, the electric control case and the gradient power amplifier case which are arranged in a stacked manner in the case assembly are convenient to assemble, any case comprises a box body, an upper cover plate and a sealing ring, the connection between the box body and the upper cover plate is sealed by the sealing ring, and the adverse factors such as corrosive salt mist water vapor in the external environment are isolated, so that the electronic devices in the case can have a reliable working environment, and the working life of the nuclear magnetic resonance core analyzer is prolonged. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the nuclear magnetic resonance core analyzer provided by this utility model;

[0025] Figure 2 A schematic diagram of the spectrometer chassis in the nuclear magnetic resonance core analyzer provided by this utility model;

[0026] Figure 3 A schematic diagram of the radio frequency chassis in the nuclear magnetic resonance core analyzer provided by this utility model;

[0027] Figure 4 A schematic diagram of the electrical control box in the nuclear magnetic resonance core analyzer provided by this utility model;

[0028] Figure 5 A schematic diagram of the gradient power amplifier chassis in the nuclear magnetic resonance core analyzer provided by this utility model;

[0029] Figure 6 A schematic diagram of the radio frequency coil in the nuclear magnetic resonance core analyzer provided by this utility model;

[0030] Figure 7 A schematic diagram of the gradient coil in the nuclear magnetic resonance core analyzer provided by this utility model;

[0031] Figure 8 A schematic diagram of the magnet structure in the nuclear magnetic resonance core analyzer provided by this utility model;

[0032] Figure 9 A schematic diagram of the structure of the carrier bed in the nuclear magnetic resonance core analyzer provided by this utility model;

[0033] Figure 10 A schematic diagram of the cabinet in the nuclear magnetic resonance core analyzer provided by this utility model;

[0034] Explanation of reference numerals in the attached figures:

[0035] 1-Rack; 11-Frame; 12-Rear door; 13-Front panel; 14-Rear panel; 15-Load-bearing platform; 16-Shock absorber; 17-Casings;

[0036] 2-spectrometer machine case; 21-first box body; 22-first sealing ring; 23-first upper cover plate; 24-first front panel; 25-first inner fixing plate;

[0037] 3-rf machine case; 31-second box body; 32-second upper cover plate; 33-second sealing ring; 34-third box body; 35-first radiator; 36-second front panel; 37-first lower cover plate;

[0038] 4-electronic control machine case; 41-fourth box body; 42-third upper cover plate; 43-third sealing ring; 44-third front panel; 45-second inner fixing plate;

[0039] 5-gradient power amplifier machine case; 51-fourth upper cover plate; 52-fifth box body; 53-fourth sealing ring; 54-sixth box body; 55-second radiator; 56-fourth front panel; 57-second lower cover plate;

[0040] 6-rf coil; 61-shielding cylinder; 62-front waveguide; 63-rear waveguide; 64-fifth sealing ring; 65-coil framework; 66-sixth sealing ring;

[0041] 7-gradient coil; 71-outer cylinder; 72-seventh sealing ring; 73-inner cylinder; 74-eighth sealing ring;

[0042] 8-magnet;

[0043] 9-carrier bed; 91-support; 92-driving member; 93-moving slide rail; 94-core groove. DETAILED DESCRIPTION

[0044] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0045] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mount", "connect", "connect" should be understood in a broad sense, for example, it can be fixed connection, can also be detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0047] In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as there is no conflict.

[0048] Embodiment

[0049] Referring to Figures 1 to 10 The embodiment provides a nuclear magnetic resonance core analyzer, which comprises a cabinet 1, a machine box assembly and a magnetic field assembly, the cabinet 1 is internally provided with an assembly cavity and a test cavity, and the assembly cavity and the test cavity are arranged in isolation; the machine box assembly comprises a spectrometer machine box 2, a radio frequency machine box 3, an electric control machine box 4 and a gradient power amplifier machine box 5 which are arranged in the assembly cavity in a stacked manner from top to bottom, any machine box comprises a box body, an upper cover plate and a sealing ring, the box body is fixed in the assembly cavity, the upper cover plate is detachably arranged on the upper end of the box body, and the sealing ring is arranged on the end faces of the box body and the upper cover plate in abutment, and the magnetic field assembly is installed in the test cavity.

[0050] The nuclear magnetic resonance core analyzer provided by the embodiment is characterized in that the machine box assembly is assembled in the assembly cavity in the cabinet 1, the magnetic field assembly is assembled in the test cavity, the assembly cavity and the test cavity are arranged in isolation, so that the machine box assembly and the magnetic field assembly are isolated to avoid mutual influence; the spectrometer machine box 2, the radio frequency machine box 3, the electric control machine box 4 and the gradient power amplifier machine box 5 arranged in a stacked manner in the machine box assembly are convenient to assemble, any machine box comprises a box body, an upper cover plate and a sealing ring, the connection between the box body and the upper cover plate is sealed by the sealing ring, and the adverse factors such as corrosive salt mist water vapor in the external environment are isolated, so that the electronic devices in the machine box can have a reliable working environment, and the working life of the nuclear magnetic resonance core analyzer is prolonged.

[0051] As a preferred embodiment, the cabinet 1 and the inner and outer walls of the machine box assembly are respectively provided with a salt mist resistant coating. The salt mist resistant coating can be an organic coating, an inorganic coating and a metal coating, such as a resin coating, a ceramic tile coating, a porcelain enamel coating, an electroplating coating, an aluminum spraying coating and the like. Of course, the coating needs to have good insulation performance.

[0052] In some specific embodiments, the cabinet 1 and the box body can be made of metal materials with good corrosion resistance, such as aluminum alloy, stainless steel, nickel-based alloy and titanium alloy.

[0053] As some structural embodiments, referring toFigure 2 The spectrometer case 2 comprises a first case body 21, a first sealing ring 22, a first upper cover plate 23, a first front panel 24 and a first inner fixing plate 25. The first upper cover plate 23 is arranged on the upper opening of the first case body 21. The first sealing ring 22 is arranged and sealed at the joint of the first case body 21 and the first upper cover plate 23. The first front panel 24 is fixedly connected to the outer end face of the first case body 21. The first inner fixing plate 25 is installed inside the first case body 21.

[0054] In a specific embodiment, the material of the spectrometer case 2 can use corrosion-resistant aluminum alloy. The first case body 21 and the first upper cover plate 23 can be welded. The spectrometer case 2 adopts a sealed structure and can be fixed by welding. A first sealing ring 22 is arranged at the contact position of the first case body 21 and the first upper cover plate 23. The first sealing ring 22 is a waterproof rubber ring, so that the inside of the first case body 21 is isolated from the outside. The outer wall surface of the first case body 21 and the first upper cover plate 23 is sprayed with a salt mist paint.

[0055] The power supply used inside the spectrometer case 2 can be a back plate attached heat dissipation type power supply. The power supply is tightly attached to the bottom of the first case body 21 and coated with a heat-conducting glue on the contact surface to promote heat conduction and dissipation, so as to transfer heat to the shell of the first case body 21 and fully utilize the shell of the first case body 21 for heat dissipation. The low-frequency connector used inside the spectrometer case 2 can use a stainless steel aviation connector with a rubber ring. The radio frequency connector uses a stainless steel coaxial connector with a polytetrafluoroethylene valve to ensure the pressure balance inside and outside the spectrometer case 2.

[0056] As some structural embodiments, see Figure 3 The radio frequency case 3 comprises a second case body 31, a second upper cover plate 32, a second sealing ring 33, a third case body 34, a first heat sink 35, a second front panel 36 and a first lower cover plate 37. The second upper cover plate 32 is arranged on the upper opening of the second case body 31. The second sealing ring 33 is arranged and sealed at the joint of the second case body 31 and the second upper cover plate 32. The third case body 34 is fixedly connected to the bottom of the second case body 31. The second case body 31 and the third case body 34 are arranged in isolation. The first heat sink 35 is installed in the third case body 34. The first lower cover plate 37 is combined at the lower end of the third case body 34.

[0057] In a specific embodiment, the material of the radio frequency cabinet 3 uses a corrosion-resistant aluminum alloy. The radio frequency cabinet 3 needs to dissipate heat considering that the radio frequency power amplifier generates a large amount of heat. The radio frequency cabinet 3 adopts a sealed structure. The radio frequency cabinet 3 is configured in an upper and lower two-layer structure. The upper layer structure is a second cabinet 31. The lower layer structure is a third cabinet 34. Electronic devices such as circuit boards are built-in in the sealed cavity of the second cabinet 31 to be isolated from the outside. The third cabinet 34 is used to install a radiator and a waterproof fan. The surface of the radiator is passivated. The sealed cavity of the second cabinet 31 is integrally welded. A second sealing ring 33 is arranged between the second cabinet 31 and the second upper cover plate 32. The second sealing ring 33 uses a sealing rubber ring. The outer wall surface of the second cabinet 31, the second upper cover plate 32, and the third cabinet 34 is sprayed with a salt mist paint. The radio frequency power amplifier module and the power supply of the radio frequency cabinet 3 are installed close to the upper surface of the radiator. The contact surface is coated with a heat-conducting glue. The teeth of the radiator are in the open ventilation space of the lower third cabinet 34 to assist the fan in dissipating heat. The upper surface of the radiator is processed with a sealing groove. A foamed silica gel strip can be installed for sealing the upper cabinet. It meets the assembly requirements of the overall structure and the sealing and heat dissipation requirements. The low-frequency connector of the radio frequency cabinet 3 uses a stainless steel aviation connector with a rubber ring. The radio frequency connector uses a stainless steel coaxial connector. A polytetrafluoroethylene air valve is added to ensure the pressure balance inside and outside the radio frequency cabinet 3.

[0058] As some structural embodiments, refer to Figure 4 The electric control cabinet 4 includes a fourth cabinet 41, a third upper cover plate 42, a third sealing ring 43, a third front panel 44, and a second inner fixing plate 45. The third upper cover plate 42 is arranged on the upper side opening of the fourth cabinet 41. The third sealing ring 43 is arranged and sealed at the connection between the fourth cabinet 41 and the third upper cover plate 42. The third front panel 44 is fixedly connected to the outer end surface of the fourth cabinet 41. The second inner fixing plate 45 is installed inside the fourth cabinet 41.

[0059] In a specific embodiment, the material of the electric control cabinet 4 uses a corrosion-resistant aluminum alloy. The electric control cabinet 4 adopts a sealed structure and is integrally welded. The third sealing ring 43 is arranged between the third upper cover plate 42 and the fourth cabinet 41. The third sealing ring 43 is a sealing rubber ring. The outer wall surface of the fourth cabinet 41 and the third upper cover plate 42 is sprayed with a salt mist paint. The low-frequency connector of the electric control cabinet 4 uses a stainless steel aviation connector with a rubber ring. The radio frequency connector of the electric control cabinet 4 uses a stainless steel coaxial connector. A polytetrafluoroethylene air valve is added to ensure the pressure balance inside and outside the cabinet. The power supply of the electric control cabinet 4 selects a back plate adhering heat dissipation type power supply. The power supply is close to the bottom of the fourth cabinet 41 and is coated with a heat-conducting glue at the contact surface. The heat is transmitted to the shell of the fourth cabinet 41 to fully utilize the fourth cabinet 41 for heat dissipation.

[0060] As some structural embodiments, refer to Figure 5The gradient power amplifier case 5 comprises a fourth upper cover plate 51, a fifth case body 52, a fourth sealing ring 53, a sixth case body 54, a second radiator 55, a fourth front panel 56 and a second lower cover plate 57. The fourth upper cover plate 51 covers the upper side opening of the fifth case body 52. The fourth sealing ring 53 is annularly arranged and sealingly connected at the connection between the fifth case body 52 and the fourth upper cover plate 51. The sixth case body 54 is fixedly connected at the bottom of the fifth case body 52. The fifth case body 52 and the sixth case body 54 are arranged in isolation. The second radiator 55 is installed in the sixth case body 54. The second lower cover plate 57 is assembled at the lower end of the sixth case body 54.

[0061] In a specific embodiment, the material of the gradient power amplifier case 5 is an aluminum alloy resistant to corrosion. The gradient power amplifier case 5 is arranged as a constant current source case. Due to the large output power, a large amount of heat is generated during the working stage and needs to be dissipated. The fifth case body 52 and the sixth case body 54 are designed in a double-layer structure. Electronic devices such as circuit boards are built-in in the sealed cavity of the upper fifth case body 52. The lower sixth case body 54 is provided with a radiator and a waterproof fan. The surface of the radiator is passivated. The sealed cavity composed of the fifth case body 52 and the fourth upper cover plate 51 is integrally welded. The fourth sealing ring 53 is arranged between the fifth case body 52 and the fourth upper cover plate 51. The fourth sealing ring 53 is made of a sealing rubber ring to isolate the outside. The outer walls of the fourth upper cover plate 51, the fifth case body 52 and the sixth case body 54 are sprayed with a salt mist paint. The power module power supply of the gradient power amplifier case 5 is installed close to the upper surface of the radiator. The contact surface is coated with a heat-conducting glue. The teeth of the radiator are located in the lower open ventilation space to assist the fan in dissipating heat. The low-frequency connector of the gradient power amplifier case 5 is made of a stainless steel aviation connector with a rubber ring. The radio frequency connector of the gradient power amplifier case 5 is made of a stainless steel coaxial connector. A polytetrafluoroethylene air valve is added to ensure the pressure balance between the inside and outside of the case.

[0062] As some structural embodiments, the magnetic field assembly comprises a radio frequency coil 6, a gradient coil 7 and a magnet 8. The radio frequency coil 6 is installed inside the magnet 8. The gradient coil 7 is sleeved and arranged in the radio frequency coil 6.

[0063] As some structural embodiments, referring to Figure 6 The radio frequency coil 6 comprises a shielding cylinder 61, a front waveguide 62, a rear waveguide 63, a fifth sealing ring 64, a coil framework 65 and a sixth sealing ring 66. The coil framework 65 is connected between the front waveguide 62 and the rear waveguide 63. The sixth sealing ring 66 is arranged at the end of the coil framework 65 towards the front waveguide 62. The fifth sealing ring 64 is arranged at the end of the coil framework 65 towards the front waveguide 62. The shielding cylinder 61 is sleeved outside the periphery of the coil framework 65.

[0064] In a specific embodiment, the shielding cylinder 61 uses a corrosion-resistant aluminum alloy, the coil skeleton 65 is provided as a polytetrafluoroethylene skeleton, and a copper strip and a capacitor are provided on the coil skeleton 65. The polytetrafluoroethylene skeleton itself has good salt spray corrosion resistance, and the main devices such as the copper strip and the capacitor on the coil skeleton 65 are connected by splicing the shielding cylinder 61, the front waveguide 62, and the rear waveguide 63, and are connected at both ends of the coil skeleton 65 by the fifth sealing ring 64 and the sixth sealing ring 66 to isolate from the outside. The fifth sealing ring 64 and the sixth sealing ring 66 can use waterproof sealing rings.

[0065] As some structural embodiments, see Figure 7 The gradient coil 7 includes an outer cylinder 71, a seventh sealing ring 72, an inner cylinder 73, and an eighth sealing ring 74. The outer cylinder 71 is sleeved outside the inner cylinder 73, and the two ends of the outer cylinder 71 and the inner cylinder 73 are respectively sealed and abutted by the seventh sealing ring 72 and the eighth sealing ring 74.

[0066] In a specific embodiment, the gradient coil 7 is sealed by the outer cylinder 71 and the inner cylinder 73 made of stainless steel, and the space between the outer cylinder 71 and the inner cylinder 73 can be filled with fluorinated liquid for heat dissipation.

[0067] As some structural embodiments, see Figure 8 The magnet 8 includes a combined frame body, and the combined frame body is provided with a mounting cavity. The combined frame body is made of an aluminum alloy frame, and a plurality of magnetic steels are arranged on the combined frame body to form the magnet 8. The magnetic steels are samarium-cobalt permanent magnets, and the samarium-cobalt permanent magnets and the aluminum alloy have good salt spray corrosion resistance. The aluminum alloy is treated by a passivation process to enhance the salt spray corrosion resistance.

[0068] As some structural embodiments, see Figure 9 The nuclear magnetic resonance core analyzer further includes a bed carrier 9, which includes a support 91, a driving member 92, a moving slide rail 93, and a core groove 94. The mounting end of the driving member 92 is fixedly arranged with the support 91, the moving slide rail 93 is arranged at the driving end of the driving member 92, the moving slide rail 93 and the support 91 are slidingly arranged, and the core groove 94 is fixedly connected to the moving slide rail 93. The core groove 94 is suitable for loading a core column to be tested, and the bed carrier 9 is used to deliver the core column to the magnetic field assembly of the test cavity.

[0069] In a specific embodiment, the support 91 can be made of a salt spray-resistant aluminum alloy material and treated by passivation, the core groove 94 is made of ABS engineering plastic, the plastic has salt spray corrosion resistance, the driving member 92 is provided as a motor, the motor needs to be selected from a salt spray-resistant type, and the connector of the bed carrier 9 is provided as a stainless steel aviation connector.

[0070] As some structural embodiments, see Figure 10, the cabinet 1 comprises a frame 11, a rear opening door 12, a front guard plate 13, a rear guard plate 14, a bearing table 15, a damping part 16 and a moving wheel 17; the frame 11 is configured with two cavities arranged separately to be respectively configured as an assembly cavity and a test cavity, the assembly cavity is arranged above the test cavity; the rear opening door 12 is connected to one side of the assembly cavity, the front guard plate 13 and the rear guard plate 14 are oppositely arranged and connected to two sides of the test cavity; the bearing table 15 is fixedly connected to the bottom of the frame 11, one or more damping parts 16 are arranged in the bearing table 15, and the moving wheel 17 is installed at the bottom of the bearing table 15.

[0071] In a specific embodiment, the cabinet 1 adopts an overall cabinet body design, and the structure is considered for ventilation and heat dissipation design; the rear opening door 12 can adopt a ventilation hole design, the rear opening door 12 is made of stainless steel material, and the inside and outside are coated with anti-salt spray paint. The power supply socket of the overall cabinet 1 adopts a stainless steel aviation connector; the space of the upper assembly cavity is used for assembling and installing the box body of the control assembly, the space of the lower test cavity is used for installing the magnetic field assembly, the detection probe is installed in the magnetic field assembly, the rear of the front and rear guard plates of the lower test cavity is designed with a sealing groove, and the sealing groove is used for installing a foamed silica gel strip to seal the inside as a whole.

[0072] Obviously, the above embodiments are only examples for clearly illustrating, and are not limitation to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A nuclear magnetic resonance core analyzer comprising: The utility model relates to a spectrum analyzer cabinet assembly and magnetic field assembly, and belongs to the field of spectrum analyzer. The utility model discloses a spectrum analyzer cabinet assembly and magnetic field assembly, and belongs to the field of spectrum analyzer. The spectrum analyzer cabinet assembly comprises a cabinet (1), a spectrum analyzer cabinet (2), a radio frequency cabinet (3), an electric control cabinet (4) and a gradient power amplifier cabinet (5). The spectrum analyzer cabinet (2) comprises a first cabinet (21), a first sealing ring (22), a first upper cover plate (23), a first front panel (24) and a first inner fixed plate (25).

2. The nuclear magnetic resonance core analyzer of claim 1, wherein, The radio frequency cabinet (3) comprises a second cabinet (31), a second upper cover plate (32), a second sealing ring (33), a third cabinet (34), a first radiator (35), a second front panel (36) and a first lower cover plate (37).

3. The nuclear magnetic resonance core analyzer of claim 1, wherein, The electric control cabinet (4) comprises a fourth cabinet (41), a third upper cover plate (42), a third sealing ring (43), a third front panel (44) and a second inner fixed plate (45).

4. The nuclear magnetic resonance core analyzer of claim 1, wherein, The electric control cabinet (4) comprises a fourth cabinet (41), a third upper cover plate (42), a third sealing ring (43), a third front panel (44) and a second inner fixed plate (45).

5. The nuclear magnetic resonance core analyzer of claim 1, wherein, The gradient power amplifier box (5) comprises a fourth upper cover plate (51), a fifth box body (52), a fourth sealing ring (53), a sixth box body (54), a second radiator (55), a fourth front panel (56) and a second lower cover plate (57); the fourth upper cover plate (51) is arranged on the upper side opening of the fifth box body (52), the fourth sealing ring (53) is annularly and sealingly connected between the fifth box body (52) and the fourth upper cover plate (51), the sixth box body (54) is fixedly connected to the bottom of the fifth box body (52), the fifth box body (52) and the sixth box body (54) are arranged in isolation, the second radiator (55) is installed in the sixth box body (54), and the second lower cover plate (57) is spliced and combined at the lower end of the sixth box body (54).

6. The nuclear magnetic resonance core analyzer of claim 1, wherein, The magnetic field assembly comprises a radio frequency coil (6), a gradient coil (7) and a magnet (8), the radio frequency coil (6) is installed inside the magnet (8), and the gradient coil (7) is sleeved in the radio frequency coil (6).

7. The nuclear magnetic resonance core analyzer of claim 6, wherein, The radio frequency coil (6) comprises a shielding cylinder (61), a front waveguide (62), a rear waveguide (63), a fifth sealing ring (64), a coil framework (65) and a sixth sealing ring (66); the coil framework (65) is connected between the front waveguide (62) and the rear waveguide (63), the sixth sealing ring (66) is arranged on the end of the coil framework (65) facing the front waveguide (62), the fifth sealing ring (64) is arranged on the end of the coil framework (65) facing the front waveguide (62), and the shielding cylinder (61) is sleeved outside the coil framework (65); and / or The gradient coil (7) comprises an outer cylinder (71), a seventh sealing ring (72), an inner cylinder (73) and an eighth sealing ring (74); the outer cylinder (71) is sleeved outside the inner cylinder (73), and the two ends of the outer cylinder (71) and the inner cylinder (73) are sealingly abutted by the seventh sealing ring (72) and the eighth sealing ring (74) respectively; and / or The magnet (8) comprises a combined frame body, and an installation cavity is arranged in the combined frame body.

8. The NMR core analyzer of any one of claims 1-7, wherein, The nuclear magnetic resonance core analyzer further comprises a carrier bed (9), and the carrier bed (9) comprises a support (91), a driving piece (92), a moving slide rail (93) and a core groove (94); the mounting end of the driving piece (92) is fixedly arranged on the support (91), the moving slide rail (93) is arranged on the driving end of the driving piece (92), the moving slide rail (93) and the support (91) are slidingly arranged, and the core groove (94) is fixedly connected to the moving slide rail (93).

9. The NMR core analyzer of any one of claims 1-7, wherein, The cabinet (1) comprises a frame (11), a rear opening door (12), a front guard plate (13), a rear guard plate (14), a bearing table (15), a damping piece (16) and a moving wheel (17); the frame (11) is provided with two cavities arranged in isolation, which are arranged as the assembly cavity and the test cavity respectively, and the assembly cavity is arranged above the test cavity. The rear door (12) is connected to one side of the assembly cavity, and the front guard plate (13) and the rear guard plate (14) are oppositely connected to two sides of the test cavity. The load-bearing table (15) is fixedly connected to the bottom of the frame (11), at least one damping member (16) is arranged in the load-bearing table (15), and the moving wheel (17) is installed at the bottom of the load-bearing table (15).

10. The nuclear magnetic resonance core analyzer of any one of claims 1-7, wherein, The cabinet (1) and the inner and outer walls of the cabinet assembly are respectively provided with a salt mist-proof coating.

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