Non-magnetic high and low temperature system and magnetic logging instrument calibration device

Abstract

The utility model provides a non-magnetic high and low temperature system and a magnetic logging instrument calibration device, relates to the technical field of magnetic logging instruments, and solves the technical problem that the high and low temperature system easily generates magnetic field interference on a non-magnetic box body. The non-magnetic high and low temperature system comprises a refrigerating unit, an air compressor and a drying machine, the refrigerating unit, the air compressor and the drying machine are all located outside the magnetic shielding chamber, and the drying machine is communicated with a gas outlet of the air compressor and used for drying air. An air inlet of the refrigerating unit is communicated with an air outlet of the air compressor, an air outlet of the refrigerating unit is communicated with the non-magnetic box body in the magnetic shielding chamber through an air inlet pipeline, and an air outlet of the non-magnetic box body is communicated with an air return opening of the refrigerating unit through an air return pipeline; the refrigerating unit, the drying machine and the air compressor are all located outside the magnetic shielding chamber, the magnetic field in the non-magnetic box body cannot be affected, and the temperature in the non-magnetic box body can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic well logging instruments, in particular to a non-magnetic high and low temperature system and a magnetic well logging instrument calibration device. Background Art

[0002] The magnetic logging instrument calibration device includes a magnetic shielding room, a three-axis non-magnetic turntable and a non-magnetic high and low temperature system. The three-axis non-magnetic turntable is used to drive the non-magnetic box to rotate in the magnetic shielding room; the non-magnetic high and low temperature system is used for cooling or heating, and then adjusting the temperature inside the non-magnetic box to meet the temperature environment inside the non-magnetic box.

[0003] In the prior art, the non-magnetic high and low temperature system includes a refrigeration unit, which includes a compressor, an evaporator, a heat exchanger, and an expansion valve. The above components are all integrated in a high and low temperature test chamber, and the high and low temperature test chamber is connected to the non-magnetic box.

[0004] The applicant has found that the prior art has at least the following technical problems: the stainless steel material of the high and low temperature test chamber is prone to cause excessive residual magnetism, and the components in the high and low temperature test chamber, such as the heater and motor current, will generate a magnetic field, generate magnetic interference, and affect the magnetic field in the non-magnetic box. Utility Model Content

[0005] The purpose of the utility model is to provide a non-magnetic high and low temperature system and a magnetic logging instrument calibration device to solve the technical problem in the prior art that the high and low temperature system is prone to generate magnetic field interference on the non-magnetic box; the many technical effects that can be produced by the preferred technical solution among the many technical solutions provided by the utility model are detailed as follows.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a non-magnetic high and low temperature system, including a refrigeration unit, an air compressor and a dryer, wherein:

[0008] The refrigeration unit, the air compressor and the dryer are all located outside the magnetic shielding room, and the dryer is connected to the gas outlet of the air compressor and is used to dry the air;

[0009] The air inlet of the refrigeration unit is connected to the gas outlet of the air compressor, the air outlet of the refrigeration unit is connected to the non-magnetic box in the magnetic shielding room through an air inlet duct, and the air outlet of the non-magnetic box is connected to the return air outlet of the refrigeration unit through a return air duct.

[0010] Preferably, the non-magnetic high and low temperature system further comprises a rotating joint assembly, wherein the rotating joint assembly comprises a rotating shaft body and an outer sleeve which are sealed and connected, wherein:

[0011] The rotating shaft body is rotatably connected to the outer sleeve, the rotating shaft body is connected to the non-magnetic box body, an inner gas channel is provided in the rotating shaft body, and the inner gas channel is communicated with the non-magnetic box body;

[0012] An outer gas channel is arranged in the outer sleeve, the outer gas channel is communicated with the inner gas channel, and the outer gas channel is communicated with the air inlet duct or the air return duct.

[0013] Preferably, the inner gas channel includes an inner gas inlet channel and an inner gas outlet channel, and the outer gas channel includes an outer gas inlet channel and an outer gas outlet channel, wherein:

[0014] The outer air inlet channel is connected to the air inlet duct, the outer air outlet channel is connected to the return air duct, the inner air inlet channel is sealed and connected to the outer air inlet channel, and the inner air outlet channel is sealed and connected to the outer air outlet channel.

[0015] Preferably, the inner gas channel includes an axial channel and a radial channel that are connected, wherein: the axial channel is arranged along the axial direction of the rotating shaft body, the radial channel connects the axial channel and the outer gas channel, and the radial channel is an annular structure arranged around the axis of the rotating shaft body.

[0016] Preferably, a sealing ring is provided between the rotating shaft body and the outer sleeve, and the sealing ring is sleeved on the rotating shaft body and located on the side of the radial channel.

[0017] Preferably, a pipe joint is provided on the outer sleeve, and the pipe joint is fixedly connected to the outer sleeve for connecting to the air inlet duct or the air return duct, and at least a portion of the outer gas channel extends into the pipe joint.

[0018] Preferably, a connecting flange is fixed on the rotating shaft body, and the connecting flange is fixedly connected to the non-magnetic box body.

[0019] Preferably, a wheel body is provided at the bottom of the box body of the refrigeration unit.

[0020] The utility model also provides a magnetic logging instrument calibration device, comprising a magnetic shielding room, a non-magnetic box and the non-magnetic high and low temperature system.

[0021] Compared with the prior art, the non-magnetic high and low temperature system and magnetic logging instrument calibration device provided by the utility model have the following beneficial effects: the dryer dries the air to prevent the moist air from entering the non-magnetic box to generate magnetic interference, the dried air enters the air compressor, the air compressor makes the air have a certain pressure, and the pressure drives the air to flow into the refrigeration unit, the refrigeration unit is used to cool or heat the air, the air with a certain temperature enters the non-magnetic box through the air inlet duct, and the air in the non-magnetic box flows back to the refrigeration unit through the return air duct, so as to realize the circulation of air. The above-mentioned refrigeration unit, dryer, and air compressor are all located outside the magnetic shielding room, and will not affect the magnetic field in the non-magnetic box, and can adjust the temperature in the non-magnetic box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the coordination structure of the non-magnetic high and low temperature system and the non-magnetic box;

[0024] Figure 2 is an axial cross-sectional view of the swivel assembly;

[0025] Figure 3 It is a schematic diagram of the external structure of the swivel joint assembly;

[0026] Figure 4 It is a schematic diagram of the internal structure of a refrigeration unit.

[0027] In the figure, 1, refrigeration unit; 11, refrigeration compressor; 12, condenser; 13, regenerator; 14, evaporator; 101, wheel body; 2, dryer; 3, air compressor; 4, rotary joint assembly; 41, shaft body; 42, outer sleeve; 43, bearing; 44, pipe joint; 431, external air inlet channel; 432, external air outlet channel; 45, internal air outlet channel; 451, axial channel; 452, radial channel; 46, internal air inlet channel; 47, connecting flange; 48, sealing ring; 49, anti-rotation ear; 5, air inlet duct; 6, return air duct; 7, non-magnetic box; 8, magnetic shielding room. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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.

[0031] The embodiment of the utility model provides a non-magnetic high and low temperature system and a magnetic logging instrument calibration device, which utilizes an air compressor to realize air transportation. The refrigeration unit, the dryer, and the air compressor are all located outside the magnetic shielding room and will not affect the magnetic field in the non-magnetic box. The system can adjust the temperature in the non-magnetic box.

[0032] Combine the following Figure 1-Figure 4 The technical solution provided by the utility model is described in more detail.

[0033] Embodiment 1:

[0034] See also Figure 1As shown, the non-magnetic high and low temperature system provided by the utility model includes a refrigeration unit 1, an air compressor 3 and a dryer 2, wherein: the refrigeration unit 1, the air compressor 3 and the dryer 2 are all located outside the magnetic shielding room 8, the dryer 2 is connected to the gas outlet of the air compressor 3, and is used to dry the air; the air inlet of the refrigeration unit 1 is connected to the gas outlet of the air compressor 3, the air outlet of the refrigeration unit 1 is connected to the non-magnetic box 7 in the magnetic shielding room 8 through the air inlet duct 5, and the air outlet of the non-magnetic box 7 is connected to the return air outlet of the refrigeration unit 1 through the return air duct 6.

[0035] Among them, see Figure 1 and Figure 4 As shown, the refrigeration unit 1 is an existing mature technology, and the refrigeration unit 1 includes a refrigeration compressor 11, a condenser 12, a regenerator 13, an evaporator 14 and a throttling device (expansion valve). The principle is that the refrigerant is compressed into a high-pressure and high-temperature gas by the compressor, and after being cooled to the ambient temperature by the condenser, it passes through the throttling device and becomes a low-temperature and low-pressure fluid to cool the object that needs to be cooled, and then returns to the compressor to continue the next cycle. Among them, the function of the regenerator is: the cold and hot air flows alternately through the regenerator, which plays the role of storing and recovering cold energy, achieving the purpose of heat exchange between the cold and hot air flows, and establishing a temperature difference between the room temperature and the cold end of the refrigerator.

[0036] The dryer 2 is a mature technology, and its structure is not described in detail here. The dryer 2 is used to dry air.

[0037] In the non-magnetic high and low temperature system provided in this embodiment, the dryer 2 dries the air to prevent the moist air from entering the non-magnetic box 7 to generate magnetic interference. The dried air enters the air compressor 3. The air compressor 3 makes the air have a certain pressure, and drives the air to flow into the refrigeration unit 1 through the pressure. The refrigeration unit 1 is used to cool or heat the air. The air with a certain temperature enters the non-magnetic box 7 through the air inlet duct 5. The air in the non-magnetic box 7 flows back to the refrigeration unit 1 through the return air duct 6 to realize the circulation of air. The above-mentioned refrigeration unit 1, dryer 2, and air compressor 3 are all located outside the magnetic shielding room 8, and will not affect the magnetic field in the non-magnetic box 7. They can adjust the temperature in the non-magnetic box 7.

[0038] Among them, see Figure 1 As shown, the non-magnetic box 7 is an existing mature technology. The non-magnetic box 7 is divided into an inner box, an outer box, a door body, a hinge, a handle, a sealing strip and other components. After the processing of each component is completed and the magnetic properties are tested to be qualified, it enters the assembly process. In the existing magnetic shielding room 8, the three-axis non-magnetic turntable is used to drive the non-magnetic box 7 to rotate in the magnetic shielding room 8. In other words, the non-magnetic box 7 needs to rotate in this shielding room. The non-magnetic box 7 is connected to the refrigeration unit 1 through the air inlet duct 5 and the return air duct 6, and the air inlet duct 5 and the return air duct 6 are prone to entanglement.

[0039] In view of the above problems, the non-magnetic high and low temperature system of this embodiment further includes a rotating joint component 4, see Figure 1-Figure 3 As shown, the rotating joint assembly 4 includes a rotating shaft body 41 and an outer sleeve 42 which are sealed and connected, wherein: the rotating shaft body 41 is rotatably connected to the outer sleeve 42, the rotating shaft body 41 is connected to the non-magnetic box body 7, an inner gas channel is provided in the rotating shaft body 41, and the inner gas channel is connected to the non-magnetic box body 7; an outer gas channel is provided in the outer sleeve 42, the outer gas channel is connected to the inner gas channel, and the outer gas channel is connected to the air inlet duct 5 or the return air duct 6.

[0040] Since the rotating shaft body 41 is connected to the non-magnetic box body 7, the outer sleeve 42 is connected to the air inlet duct 5 and the return air duct 6, and the outer gas channel is connected to the inner gas channel. In this arrangement, the rotating shaft body 41 rotates with the non-magnetic box body 7, while the outer shaft body does not move, which can prevent the air inlet duct 5 and the return air duct 6 from being entangled and prevent the rotation of the non-magnetic box body 7 from being affected.

[0041] The rotating joint assembly 4 of this structure does not affect the rotation of the non-magnetic box 7 , and realizes the stable connection between the air inlet duct 5 and the non-magnetic box 7 , and between the air return duct 6 and the non-magnetic box 7 .

[0042] As an alternative embodiment, see Figure 2 As shown, the inner gas channel includes an inner air inlet channel 46 and an inner air outlet channel 45, and the outer gas channel includes an outer air inlet channel 431 and an outer air outlet channel 432, wherein: the outer air inlet channel 431 is connected to the air inlet duct 5, the outer air outlet channel 432 is connected to the return air duct 6, the inner air inlet channel 46 is sealed and connected to the inner air inlet channel 46, and the inner air outlet channel 45 is sealed and connected to the outer air outlet channel 432.

[0043] In the above structure, when the rotating shaft body 41 rotates with the non-magnetic box body 7, the air inlet duct 5 and the non-magnetic box body 7, and the return air duct 6 and the non-magnetic box body 7 can always be connected through the inner gas channel and the outer gas channel structure to ensure stable and continuous air supply and return.

[0044] As an alternative embodiment, see Figure 2 As shown, the inner gas channel includes an axial channel 451 and a radial channel 452 that are connected, wherein: the axial channel 451 is arranged along the axial direction of the rotating shaft body 41, the radial channel 452 connects the axial channel 451 and the outer gas channel, and the radial channel 452 is an annular structure arranged around the axis of the rotating shaft body 41.

[0045] See also Figure 2As shown, the inner air inlet channel 46 and the inner air outlet channel 45 both include the above structure. Since the radial channel 452 is an annular structure arranged around the axis of the rotating shaft body 41, when the inner shaft body rotates with the non-magnetic box body 7360°, the outer gas channel is always connected to the radial channel 452, that is, the outer gas channel is always connected to the inner gas channel, thereby ensuring that the air inlet duct 5 is always connected to the non-magnetic box body 7, and the return air duct 6 is always connected to the non-magnetic box body 7.

[0046] As an alternative embodiment, see Figure 2 As shown, a sealing ring 48 is provided between the rotating shaft body 41 and the outer sleeve 42 . The sealing ring 48 is sleeved on the rotating shaft body 41 and is located on the side of the radial channel 452 .

[0047] The sealing ring 48 may be made of rubber material. The sealing ring 48 is squeezed between the rotating shaft body 41 and the outer shaft sleeve 42 to ensure the sealing performance between the rotating shaft body 41 and the outer shaft sleeve 42 and prevent air leakage.

[0048] As an alternative embodiment, see Figure 2 As shown, a pipe connector 44 is provided on the outer sleeve 42. Figure 3 The structure of the pipe joint 44 is omitted, and the pipe joint 44 is fixedly connected to the outer sleeve 42 for connecting the air inlet duct 5 or the air return duct 6 , and at least part of the external gas channel extends into the pipe joint 44 .

[0049] The pipe joint 44 facilitates the connection between the air inlet duct 5 or the air return duct 6 and the outer shaft sleeve 42, and is easy to assemble.

[0050] See also Figure 2 As shown, the rotating shaft body 41 and the outer sleeve 42 are rotatably connected and supported by double bearings 43 to ensure the concentricity of rotation. With the sealing ring 48, it has the characteristics of small contact point, strong sealing, small rotation torque, wear resistance, low temperature resistance, etc., and the structure is waterproof, anti-condensation, dustproof, etc. The rotating link includes the rotating shaft body 41 (rotating part) and the outer sleeve 42 (fixed part). The outer sleeve 42 is fixed by the stop ear 49, and the rotating shaft body 41 is connected to the turntable through the connecting flange 47. The axial channel 451 ensures that when the rotating shaft body 41 rotates, the air inlet duct 5 and the non-magnetic box body 7, and the return air duct 6 and the non-magnetic box body 7 are always connected. The rotating link component is made of non-magnetic and high and low temperature resistant nylon and polytetrafluoroethylene materials as a whole, and the sealing ring 48 is a rubber sealing ring 48.

[0051] As an alternative embodiment, see Figure 2 and Figure 3 As shown, a connecting flange 47 is fixed on the rotating shaft body 41 , and the connecting flange 47 is fixedly connected to the non-magnetic box body 7 .

[0052] The bolts or other locking parts pass through the connecting flange 47 to connect the rotating shaft body 41 to the non-magnetic housing 7, so that the rotating shaft body 41 and the non-magnetic housing 7 can rotate synchronously.

[0053] As an alternative embodiment, see Figure 1 As shown, a wheel body 101 is provided at the bottom of the box body of the refrigeration unit 1, so as to facilitate moving the refrigeration unit 1 to a suitable position according to actual needs, and is easy to use.

[0054] Embodiment 2:

[0055] join Figure 1 As shown, this embodiment provides a magnetic logging instrument calibration device, including a magnetic shielding room 8, a non-magnetic box 7 and the above-mentioned non-magnetic high and low temperature system.

[0056] The magnetic logging instrument calibration device of this embodiment has the above-mentioned non-magnetic high and low temperature system, and air with a certain temperature enters the non-magnetic box 7 through the air inlet duct 5, and the air in the non-magnetic box 7 flows back to the refrigeration unit 1 through the return air duct 6, so as to realize the circulation of air. The refrigeration unit 1, the dryer 2, and the air compressor 3 are all located outside the magnetic shielding room 8, and will not affect the magnetic field in the non-magnetic box 7. They can adjust the temperature in the non-magnetic box 7 to ensure the stable operation of the magnetic logging instrument calibration device.

[0057] In the description of this specification, specific features, structures or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0059] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A non-magnetic high and low temperature system, characterized in that: Includes refrigeration units, air compressors and dryers, including: The refrigeration unit, the air compressor and the dryer are all located outside the magnetic shielding room, and the dryer is connected to the gas outlet of the air compressor and is used to dry the air; The air inlet of the refrigeration unit is connected to the gas outlet of the air compressor, the air outlet of the refrigeration unit is connected to the non-magnetic box in the magnetic shielding room through an air inlet duct, and the air outlet of the non-magnetic box is connected to the return air outlet of the refrigeration unit through a return air duct.

2. The non-magnetic high and low temperature system according to claim 1, characterized in that: The non-magnetic high and low temperature system further comprises a rotating joint assembly, wherein the rotating joint assembly comprises a rotating shaft body and an outer sleeve which are sealed and connected, wherein: The rotating shaft body is rotatably connected to the outer sleeve, the rotating shaft body is connected to the non-magnetic box body, an inner gas channel is provided in the rotating shaft body, and the inner gas channel is communicated with the non-magnetic box body; An outer gas channel is arranged in the outer sleeve, the outer gas channel is communicated with the inner gas channel, and the outer gas channel is communicated with the air inlet duct or the air return duct.

3. The non-magnetic high and low temperature system according to claim 2, characterized in that: The inner gas channel includes an inner gas inlet channel and an inner gas outlet channel, and the outer gas channel includes an outer gas inlet channel and an outer gas outlet channel, wherein: The outer air inlet channel is connected to the air inlet duct, the outer air outlet channel is connected to the return air duct, the inner air inlet channel is sealed and connected to the outer air inlet channel, and the inner air outlet channel is sealed and connected to the outer air outlet channel.

4. The non-magnetic high and low temperature system according to claim 2, characterized in that: The inner gas channel includes an axial channel and a radial channel that are connected, wherein: the axial channel is arranged along the axial direction of the rotating shaft body, the radial channel connects the axial channel and the outer gas channel, and the radial channel is an annular structure arranged around the axis of the rotating shaft body.

5. The non-magnetic high and low temperature system according to claim 4, characterized in that: A sealing ring is arranged between the rotating shaft body and the outer shaft sleeve. The sealing ring is sleeved on the rotating shaft body and is located on the side of the radial channel.

6. The non-magnetic high and low temperature system according to claim 2, characterized in that: The outer sleeve is provided with a pipe joint, which is fixedly connected to the outer sleeve and is used to connect with the air inlet duct or the air return duct, and at least a part of the outer gas channel extends into the pipe joint.

7. The non-magnetic high and low temperature system according to claim 2, characterized in that: A connecting flange is fixed on the rotating shaft body, and the connecting flange is fixedly connected to the non-magnetic box body.

8. The non-magnetic high and low temperature system according to claim 2, characterized in that: A wheel body is arranged at the bottom of the box body of the refrigeration unit.

9. A magnetic logging tool calibration device, characterized in that: It comprises a magnetic shielding room, a non-magnetic box and the non-magnetic high and low temperature system according to any one of claims 1 to 8.

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