A passive constant temperature and humidity system for skid-mounted testing laboratories

Abstract

A passive constant temperature and humidity system for a skid-mounted testing laboratory includes a passive constant temperature and humidity system, a fresh air system, skid-mounted materials, testing instruments, a power supply system, and a water supply system. The passive constant temperature and humidity system includes a constant temperature system and a constant humidity system. The constant temperature system includes a vacuum layer, a thermal insulation layer, a capillary layer, and a heat pump. The constant humidity system includes a humidification system and a dehumidification system, respectively. The skid-mounted materials form the internal load-bearing support frame of the skid-mounted testing laboratory. The skid-mounted testing laboratory is equipped with testing instruments. This system solves the problem of skid-mounted testing laboratories having difficulty meeting constant temperature and humidity requirements, and also addresses the long inspection cycle and low inspection efficiency of oilfield materials. It avoids the problems caused by active air conditioning for cooling, heating, dehumidification, and humidification. Through the rational design and use of a passive constant temperature and humidity system, it achieves a constant temperature range of 23°C ± 5°C and a constant humidity range of 65.0% ± 4%, meeting the testing environment requirements of skid-mounted testing laboratories.

Description

Technical Field

[0001] The present invention belongs to the technical field of skid-mounted laboratory environment control, and in particular relates to a passive constant temperature and humidity system for a skid-mounted testing laboratory. Background Art

[0002] With the advent of the energy crisis, increasing oil and gas production has become a key focus of technological breakthroughs worldwide. Ensuring the supply of oilfield materials is a crucial means of increasing oil and gas production. Ensuring the quality of oilfield materials not only improves their quality but also plays a crucial role in increasing oil and gas production, extending the life of oilfields, and protecting personnel and property. Therefore, ensuring the quality of oilfield material testing is crucial to ensuring oilfield supply.

[0003] The quality and safety of oilfield materials are assessed through sampling, collection, and delivery to various third-party inspection and testing agencies, typically taking ten days or even longer to complete. This fixed testing method suffers from long testing cycles and low efficiency. By establishing on-site skid-mounted testing laboratories at production, construction, and quality control sites, and meeting the requirements of "people, equipment, materials, methods, and environment," it is expected that on-site, rapid testing can be achieved, effectively shortening the testing cycle to two days, thereby improving testing efficiency and effectively evaluating the quality of oilfield materials.

[0004] However, the existing skid-mounted testing laboratories are unable to achieve constant temperature and humidity, and cannot meet the requirements of the testing environment, that is, they cannot meet the requirements of a constant temperature range of 23°C ± 5°C and a constant humidity range of 65.0% ± 4%, resulting in inaccurate test results and poor repeatability.

[0005] Existing technologies for maintaining temperature and humidity in testing laboratories typically rely on active constant temperature and humidity, employing air conditioning systems for cooling and heating. However, since skid-mounted testing laboratories are typically located outdoors, the internal ambient temperature fluctuates significantly (over 10°C), making it difficult to maintain a constant temperature. Furthermore, while air conditioning systems can dehumidify, and a few newer systems have humidification capabilities, these still cannot meet the required humidity of 65.0% ± 4%. Addressing the inability of skid-mounted testing laboratories to maintain constant temperature and humidity is crucial for establishing skid-mounted testing laboratories that meet the required experimental conditions. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a passive constant temperature and humidity system for a skid-mounted testing laboratory in response to the deficiencies of the above-mentioned prior art.

[0007] In order to achieve the above technical objectives, the technical solution adopted by the present invention is:

[0008] A skid-mounted passive constant temperature and humidity system for a testing laboratory, comprising a passive constant temperature and humidity system, a fresh air system, skid-mounted materials, testing instruments, a power supply system, and a water supply system;

[0009] The skid-mounted materials form the internal load-bearing support frame of the skid-mounted testing laboratory, the passive constant temperature and humidity system is coated on the load-bearing support frame to form the outer shell of the skid-mounted laboratory, and the fresh air system, testing instruments, power supply system and water supply system are arranged in the skid-mounted laboratory;

[0010] The passive constant temperature and humidity system includes a constant temperature system and a constant humidity system. The constant temperature system includes a vacuum layer, a heat insulation material layer, a capillary layer and a heat pump; the constant humidity system includes a humidification and a dehumidification system, which are used for humidification and dehumidification respectively.

[0011] Preferably, the fresh air system is used for ventilation of the skid-mounted testing laboratory.

[0012] Preferably, the power supply system supplies power to the passive constant temperature and humidity system, fresh air system and testing instruments in the skid-mounted testing laboratory.

[0013] Preferably, the water supply system is used to meet the water supply needs in the skid-mounted testing laboratory.

[0014] Preferably, the detection instruments include the instruments and equipment required by the skid-mounted testing laboratory for carrying out testing work. According to different oilfield material testing requirements, corresponding detection instruments are equipped, and the equipped detection instruments are placed in the sample testing area.

[0015] Preferably, the vacuum layer of the constant temperature system is formed by two layers of stainless steel spaced apart, and the space between the two layers of stainless steel is vacuum.

[0016] Preferably, the thermal insulation material layer is arranged on the inner side of the vacuum layer and is compounded by quartz sand, water-based rock chips and hollow glass beads for inner layer thermal insulation; the compounding mass ratio of the quartz sand, water-based rock chips and hollow glass beads is 4:4:1-3.

[0017] Preferably, the capillary layer is arranged on the inner side of the thermal insulation material layer, and is used for exchanging heat with the interior of the skid-mounted laboratory. By performing heat exchange with the interior of the skid-mounted laboratory, the temperature inside the skid-mounted laboratory is controlled.

[0018] Preferably, the capillary layer uses water as the heat exchange medium, the material of the capillary layer is polyethylene or polypropylene, and the specification range of the capillary layer pipeline diameter is 1mm to 0.01mm.

[0019] Preferably, the heat pump is used to drive the flow of heat exchange medium in the capillary layer to achieve heat exchange between the capillary layer and groundwater.

[0020] Preferably, the temperature control range of the skid-mounted testing laboratory is 23°C ± 5°C, and the humidity control range of the skid-mounted testing laboratory is 65.0% ± 4%.

[0021] The present invention has the following beneficial effects:

[0022] The passive constant temperature and humidity system for a skid-mounted testing laboratory provided by the present invention solves the problem that skid-mounted testing laboratories are difficult to meet the requirements for constant temperature and humidity, and at the same time solves the problems of long testing cycles and low testing efficiency for oilfield materials. The problems caused by the use of active air-conditioning for cooling, heating, dehumidification, and humidification are avoided. Through reasonable design and the use of a passive constant temperature and humidity system, the constant temperature range is 23°C ± 5°C and the constant humidity range is 65.0% ± 4%, meeting the testing environment requirements of skid-mounted testing laboratories. By integrating different oilfield material testing instruments into a passive constant temperature and humidity skid-mounted testing laboratory, it can be applied to on-site and rapid testing of different types of oilfield materials, on-site sampling, and sampling, eliminating the steps of sample storage and sample delivery, directly testing and obtaining results in real time, realizing real-time monitoring of testing, facilitating the most accurate judgment of quality and safety issues of oilfield materials, and providing quality assurance for subsequent oil and gas production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a top view of a passive constant temperature and humidity system for a skid-mounted testing laboratory of the present invention.

[0025] Figure 2 This is a front view of a skid-mounted passive constant temperature and humidity system for a testing laboratory (heating in winter) according to the present invention.

[0026] Figure 3 This is a front view of a skid-mounted passive constant temperature and humidity system for a testing laboratory (cooling in summer) according to the present invention.

[0027] Figure 4 It is a top view of the first equipment arrangement of the sample testing area of ​​a passive constant temperature and humidity system in a skid-mounted testing laboratory according to the present invention.

[0028] Figure 5 It is a top view of a second equipment arrangement mode of a sample testing area of ​​a passive constant temperature and humidity system in a skid-mounted testing laboratory according to the present invention.

[0029] Figure 6 It is a top view of the third equipment arrangement mode of the sample testing area of ​​the passive constant temperature and humidity system of a skid-mounted testing laboratory according to the present invention.

[0030] In the figure: 1. Stainless steel layer; 2. Vacuum layer; 3. Insulation material layer; 4. Cement layer; 5. Capillary layer; 6. Aluminum layer; 7. Door; 8. Office area; 9. Rest area; 10. Sample testing area; A. Heat pump; B. Groundwater; C. Fresh air system; D. Humidification and dehumidification system; E. Floor; 11. Sample divider, bulk density meter; 12. Density bottle, electronic balance; 13. Vibrating screen, sieve; 14. Universal pressure testing machine; 15. Microscope, computer; 16. Turbidimeter, acid dissolution equipment; 17. High temperature High-pressure filter loss meter; 18. Viscometer, capillary tube; 19. Water bath, beaker; 20. Centrifuge, oven; 21. Rheometer, accessories; 22. Surface tension meter; 23. High-temperature and high-pressure filter loss meter, filter loss meter, viscometer; 24. Electric stabilizer tester, solid content tester; 25. Viscosity coefficient meter, low-speed centrifuge, water bath; 26. Sediment content meter, high-temperature roller heating furnace, hydrometer; 27. Acid and alkali resistant chemical test bench, balance, iron stand; 28. Chemical reagent storage cabinet, glass instrument storage cabinet. DETAILED DESCRIPTION

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0032] The following detailed description is for illustrative purposes only and is intended to provide further detailed description of the present invention. Unless otherwise indicated, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used in the present invention are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention.

[0033] See also Figure 1-Figure 3 , a skid-mounted passive constant temperature and humidity system for testing laboratories, including a passive constant temperature and humidity system, a fresh air system, skid-mounted materials, testing instruments, a power supply system, and a water supply system;

[0034] The skid-mounted materials constitute the internal load-bearing support frame of the skid-mounted testing laboratory. In specific implementation, a cement layer 4 and an aluminum layer 6 are used as the internal load-bearing support frame. The passive constant temperature and humidity system is coated on the load-bearing support frame to form the outer shell of the skid-mounted laboratory. The fresh air system C, testing instruments, power supply system, and water supply system are installed in the skid-mounted laboratory.

[0035] The passive constant temperature and humidity system includes a constant temperature system and a constant humidity system. The constant temperature system includes a vacuum layer, a heat insulation material layer, a capillary layer and a heat pump. The constant humidity system includes a humidification and dehumidification system D, which is used for humidification and dehumidification respectively.

[0036] The skid-mounted testing laboratory is provided with testing instruments.

[0037] During specific implementation, the fresh air system C is used for ventilation of the skid-mounted testing laboratory.

[0038] During specific implementation, the power supply system supplies power to the passive constant temperature and humidity system, fresh air system C and testing instruments in the skid-mounted testing laboratory.

[0039] During specific implementation, the water supply system is used to meet the water supply needs within the skid-mounted testing laboratory.

[0040] In specific implementation, the testing instruments include the instruments and equipment required by the skid-mounted testing laboratory for carrying out testing work. According to different oilfield material testing requirements, corresponding testing instruments are equipped, and the equipped testing instruments are placed in the sample testing area 10.

[0041] In specific implementation, the vacuum layer 2 of the constant temperature system is formed by two layers of stainless steel spaced apart, and the space between the two layers of stainless steel 1 is vacuum, see Figure 1-Figure 3 The skid-mounted laboratory is placed on the ground E. The thermal insulation material layer 3 is located inside the vacuum layer 2 and is composed of a compound of quartz sand, water-based rock chips, and hollow glass beads, providing inner thermal insulation. The mass ratio of the quartz sand, water-based rock chips, and hollow glass beads is 4:4:1-3 (the greater the relative mass of the quartz sand and water-based rock chips, the higher the hardness and the better the support effect; the higher the hollow glass bead content, the better the thermal insulation effect). The capillary layer is located inside the thermal insulation material layer 3 and is used to exchange heat with the interior of the skid-mounted laboratory. This heat exchange with the interior of the skid-mounted laboratory controls the internal temperature of the skid-mounted laboratory. The capillary layer 5 uses water as the heat exchange medium. The capillary layer 5 is made of polyethylene or polypropylene, and the diameter of the capillary layer 5 ranges from 1mm to 0.01mm (the smaller the diameter of the capillary layer 5, the higher the heat exchange efficiency). The heat pump A is used to drive the heat exchange medium within the capillary layer 5, enabling heat exchange between the capillary layer 5 and the groundwater B. Heat pump A (heating) refers to a mechanical device used to extract groundwater B in winter. Groundwater B serves as the heat exchange medium. Groundwater B is extracted to the capillary layer 5 through heat pump A (heating), and the heat is transferred to the passive constant temperature and humidity skid-mounted testing laboratory. After a certain period of heat exchange, the temperature of the skid-mounted testing laboratory reaches the required level and the temperature of the skid-mounted testing laboratory is controlled at 23℃±5℃.

[0042] The system operation process is: ventilation is first completed through the fresh air system, then the constant humidity system is used to complete humidity control, and finally the constant temperature system is used to complete temperature control.

[0043] Based on testing requirements, the skid-mounted testing laboratory is divided into a sample testing area 10, an office area 8, and a rest area 9. The skid-mounted laboratory is equipped with a door 7 for entry and exit. The sample testing area 10 is used for testing oilfield materials, the office area 8 is used for testing data processing and report issuance, and the rest area 9 is used for rest by testing staff.

[0044] See also Figure 4 In the sample testing area 10, the instruments required for fracturing proppant testing are integrated in an "S" shape from left to right, including a sample splitter, a bulk density meter 11, a density bottle, an electronic balance 12, a vibrating screen, a screen 13, a universal pressure testing machine 14, a microscope, a computer 15, a turbidity meter, and an acid dissolution equipment 16, which can meet the full project testing of fracturing proppant.

[0045] See also Figure 5 In the sample testing area 10, the instruments required for water-based fracturing fluid testing are integrated in an "S" shape from left to right, including a high-temperature and high-pressure filter loss tester 17, a viscometer and a capillary tube 18, a water bath and a beaker 19, a centrifuge and an oven 20, a rheometer and an auxiliary device 21, and a surface tension meter 22, which can meet the full-item testing of water-based fracturing fluid.

[0046] See also Figure 6 In the sample testing area 10, the instruments required for drilling fluid testing are integrated in an "S" shape from left to right, including high-temperature and high-pressure filter loss meter, filter loss meter, viscometer 23, electric stabilizer tester, solid content tester 24, viscosity coefficient meter, low-speed centrifuge, water bath 25, sand content meter, high-temperature roller heating furnace, hydrometer 26, acid and alkali resistant chemical test bench, balance, iron frame table 27, chemical reagent storage cabinet, glass instrument storage cabinet 28, which can meet the full project testing of drilling fluid.

[0047] Example 1:

[0048] See also Figure 2During humid winter weather, when the humidity is greater than 69.0%, meaning it does not meet the constant humidity range of 65.0% ± 4%, the passive constant temperature and humidity skid-mounted testing laboratory first uses fresh air system C to ventilate the laboratory. This system is kept running for two hours and then turned off. The dehumidification system in humidification and dehumidification system D is then turned on for at least four hours. Once the humidity meets the constant humidity range of 65.0% ± 4%, the dehumidification system is turned off. Heat pump A is then turned on (heating) to pump groundwater B into capillary layer 5. This system is kept running for two hours, transferring heat to the passive constant temperature and humidity skid-mounted testing laboratory. After a certain period of heat exchange, the temperature of the passive constant temperature and humidity skid-mounted testing laboratory reaches 23°C ± 5°C, and heat pump A is turned off (heating). If the temperature is below 18°C, meaning it does not meet the constant temperature range of 23°C ± 5°C, heat pump A is turned on (heating) until it reaches 23°C ± 5°C, and then it is turned off (heating).

[0049] Example 2

[0050] In dry winter weather, when humidity exceeds 61.0%, meaning it does not meet the constant humidity range of 65.0% ± 4%, the passive constant temperature and humidity skid-mounted test laboratory first uses fresh air system C to ventilate the laboratory. This system is kept running for two hours and then shut down. The humidification system in humidification and dehumidification system D is then turned on for four hours. Once the humidity meets the constant humidity range of 65.0% ± 4%, the humidification system in humidification and dehumidification system D is shut down. Heat pump A is then turned on (for heating) to pump groundwater B into the 5-capillary layer. This state is kept running for two hours, transferring heat to the passive constant temperature and humidity skid-mounted test laboratory. After a certain period of heat exchange, the temperature of the passive constant temperature and humidity skid-mounted test laboratory reaches 23°C ± 5°C, and heat pump A is shut down (for heating). If the temperature falls below 18°C, meaning it does not meet the constant temperature range of 23°C ± 5°C, heat pump A is turned on (for heating) until it reaches 23°C ± 5°C, and then shut down (for heating).

[0051] Example 3:

[0052] See also Figure 3In the humid climate in summer, the humidity is greater than 69.0%, which does not meet the constant humidity range of 65.0%±4%. The passive constant temperature and humidity skid-mounted testing laboratory first uses the fresh air system C to complete the ventilation in the laboratory, and keeps the fresh air system C on for two hours, and then turns off the fresh air system C; then turns on the dehumidification system in the humidification and dehumidification system D, and keeps it on for more than 4 hours. When the humidity meets the constant humidity range of 65.0%±4%, turns off the dehumidification system in the humidification and dehumidification system D; then turns on the heat pump A (cooling) to pump the water in the capillary layer 5 to the groundwater B, and after cooling through the groundwater B, pump it back to the capillary layer 5, and keep it on for two hours to transfer the heat to the passive constant temperature and humidity skid-mounted testing laboratory. After a certain period of heat exchange, the temperature of the passive constant temperature and humidity skid-mounted testing laboratory reaches 23℃±5℃, and then turns off the heat pump A (cooling). If the temperature is higher than 23℃±5℃, that is, it does not meet the constant temperature range of 23℃±5℃, turn on heat pump A (cooling) until the temperature reaches 23℃±5℃, and then turn off heat pump A (cooling).

[0053] Example 4

[0054] In the dry climate of summer, the humidity is greater than 61.0%, which does not meet the constant humidity range of 65.0%±4%. The passive constant temperature and humidity skid-mounted testing laboratory first uses the fresh air system C to complete the ventilation in the laboratory, and keeps the fresh air system C on for two hours, and then turns off the fresh air system C; then turns on the humidification system in the humidification and dehumidification system D, and keeps it on for 4 hours. When the humidity meets the constant humidity range of 65.0%±4%, turns off the humidification system in the humidification and dehumidification system D; then turns on the heat pump A (cooling) to pump the water in the capillary layer 5 to the groundwater B, and after cooling through the groundwater B, pumps it back to the capillary layer 5 to transfer the heat to the passive constant temperature and humidity skid-mounted testing laboratory. After a certain period of heat exchange, the temperature of the passive constant temperature and humidity skid-mounted testing laboratory reaches 23℃±5℃, and then turns off the heat pump A (cooling). If the temperature is higher than 23℃±5℃, that is, it does not meet the constant temperature range of 23℃±5℃, turn on heat pump A (cooling) until the temperature reaches 23℃±5℃, and then turn off heat pump A (cooling).

[0055] In the above embodiment, the heat pump A and the groundwater B can achieve heat exchange through direct medium exchange or through temperature conduction.

[0056] Example 5

[0057] This embodiment differs from Example 1 or Example 2 in that the insulation material layer comprises quartz sand, water-based rock chips, and hollow glass beads in a mass ratio of 4:4:2. Similarly, in winter, reducing the mass of hollow glass beads will reduce the insulation capacity of the passive constant temperature and humidity skid-mounted testing laboratory, requiring a heat pump (heating) of A- to 4 hours during use.

[0058] Example 6

[0059] This embodiment differs from Example 1 or Example 2 in that the insulation material ratio of this embodiment is quartz sand, water-based rock chips, and hollow glass beads in a ratio of 4:4:1. Similarly, in winter, reducing the mass of hollow glass beads will reduce the insulation capacity of the passive constant temperature and humidity skid-mounted testing laboratory, requiring the A-heat pump (heating) to be increased to 8 hours during use.

[0060] Example 7

[0061] The difference between this embodiment and embodiment 1 or embodiment 2 is that the capillary layer of this embodiment is made of polypropylene. Also in winter, the insulation material layer is made of polypropylene, and the functions and use procedures of the passive constant temperature and humidity skid-mounted testing laboratory remain unchanged.

[0062] Example 8

[0063] This embodiment differs from Embodiment 1 or 2 in that the capillary tube layer is 0.1 mm in size. Similarly, in winter, using larger capillary tubes will reduce the heat exchange efficiency of the passive constant temperature and humidity skid-mounted testing laboratory, requiring a heat pump (heating) of up to 6 hours during use.

[0064] Example 9

[0065] This embodiment differs from Embodiment 1 or 2 in that the capillary tube layer is 1 mm in size. Similarly, in winter, using larger capillary tubes will reduce the heat exchange efficiency of the passive constant temperature and humidity skid-mounted testing laboratory, requiring the A-heat pump (heating) to be heated for 12 hours during use.

[0066] Example 10

[0067] The difference between this embodiment and embodiment 1 or embodiment 2 is that this embodiment is a passive constant temperature and humidity skid-mounted testing laboratory for fracturing proppants, which is designed as follows: Figure 2 、 4 As shown, the constant temperature and humidity working process is the same as that in Example 1. Figure 4 In the sample testing area 10, the instruments required for fracturing proppant testing are integrated in an "S" shape from left to right, including 11-sample divider, volume density meter, 12-density bottle, electronic balance, 13-vibrating screen, screen, 14-universal pressure testing machine, 15-microscope, computer, 16-turbidity meter, acid dissolution equipment, which can meet the full project testing of fracturing proppant.

[0068] Example 11

[0069] The difference between this embodiment and embodiment 1 or embodiment 2 is that this embodiment is a passive constant temperature and humidity skid-mounted testing laboratory for water-based fracturing fluid, which is designed as follows: Figure 2 、5 As shown, the constant temperature and humidity working process is the same as that in Example 1. Figure 5 In the sample testing area 10, the instruments required for water-based fracturing fluid testing are integrated in an "S" shape from left to right, including 11-high-temperature and high-pressure filter loss meter, 12-viscometer, capillary, 13-water bath, beaker, 14-centrifuge, oven, 15-rheometer, accessories, 16-surface tension meter, which can meet the full project testing of water-based fracturing fluid.

[0070] Example 12

[0071] The difference between this embodiment and embodiment 1 or embodiment 2 is that this embodiment is a passive constant temperature and humidity skid-mounted testing laboratory for drilling fluid, which is designed as follows: Figure 2 、 6 As shown, the constant temperature and humidity working process is the same as that in Example 1. Figure 6 In the 10-sample testing area, the instruments required for drilling fluid testing are integrated in an "S" shape from left to right, including 11-high-temperature and high-pressure filter loss meter, filter loss meter, viscometer, 12-electric stabilizer tester, solid content tester, 13-viscosity coefficient meter, low-speed centrifuge, water bath, 14-sand content meter, high-temperature roller heating furnace, hydrometer, 5-acid and alkali resistant chemical test bench, balance, iron frame table, 16-chemical reagent storage cabinet, glass instrument storage cabinet, which can meet the full range of drilling fluid testing.

[0072] The present invention provides a passive constant temperature and humidity system for a skid-mounted testing laboratory, which solves the problem that skid-mounted testing laboratories are difficult to meet the requirements for constant temperature and humidity, and at the same time solves the problems of long testing cycles and low testing efficiency for oilfield materials. It avoids the problems caused by the use of active air-conditioning for cooling, heating, dehumidification, and humidification. Through reasonable design and the use of a passive constant temperature and humidity system, it meets the requirements of the skid-mounted testing laboratory for a constant temperature range of 23°C ± 5°C and a constant humidity range of 65.0% ± 4%, meeting the testing environment requirements of the skid-mounted testing laboratory. By integrating different oilfield material testing instruments into a passive constant temperature and humidity skid-mounted testing laboratory, it can be applied to on-site and rapid testing of different types of oilfield materials, on-site sampling, and sampling, eliminating the steps of sample storage and sample delivery, directly testing and obtaining results in real time, realizing real-time monitoring of testing, facilitating the most accurate judgment of quality and safety issues of oilfield materials, and providing quality assurance for subsequent oil and gas production.

[0073] It is understood from common technical knowledge that the present invention may be implemented by other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A passive constant temperature and humidity system for a skid-mounted testing laboratory, characterized by: The system includes a passive constant temperature and humidity system, a fresh air system, skid-mounted materials, testing instruments, a power supply system, and a water supply system; The skid-mounted materials form the internal load-bearing support frame of the skid-mounted testing laboratory, the passive constant temperature and humidity system is coated on the load-bearing support frame to form the outer shell of the skid-mounted laboratory, and the fresh air system, testing instruments, power supply system and water supply system are arranged in the skid-mounted laboratory; The passive constant temperature and humidity system includes a constant temperature system and a constant humidity system. The constant temperature system includes a vacuum layer, a thermal insulation material layer, a capillary layer and a heat pump. The vacuum layer, the thermal insulation material layer and the capillary layer are arranged in sequence from the outside to the inside, and the heat pump is connected to the capillary layer. The constant humidity system includes a humidification and a dehumidification system, which are used for humidification and dehumidification respectively.

2. The passive constant temperature and humidity system for a skid-mounted testing laboratory according to claim 1, characterized in that: The fresh air system is used for ventilation of the skid-mounted testing laboratory.

3. The passive constant temperature and humidity system for a skid-mounted testing laboratory according to claim 1, characterized in that: The power supply system supplies power to the passive constant temperature and humidity system, fresh air system and testing instruments in the skid-mounted testing laboratory.

4. The passive constant temperature and humidity system for a skid-mounted testing laboratory according to claim 1, characterized in that: The water supply system is used to meet the water supply needs in the skid-mounted testing laboratory.

5. The passive constant temperature and humidity system for a skid-mounted testing laboratory according to claim 1 is characterized by: The testing instruments include the instruments and equipment required by the skid-mounted testing laboratory for carrying out testing work. According to the different oilfield material testing requirements, corresponding testing instruments are equipped and placed in the sample testing area.

6. The passive constant temperature and humidity system for a skid-mounted testing laboratory according to claim 1, characterized in that: The vacuum layer of the constant temperature system is formed by two layers of stainless steel spaced apart, and the space between the two layers of stainless steel is vacuum.

7. The passive constant temperature and humidity system for a skid-mounted testing laboratory according to claim 1, characterized in that: The heat-insulating material layer is arranged inside the vacuum layer and is made of quartz sand, water-based rock cuttings and hollow glass beads, and is used for inner layer heat insulation; The mass ratio of the quartz sand, water-based rock cuttings and hollow glass beads is 4:4:1-3.

8. The passive constant temperature and humidity system for a skid-mounted testing laboratory according to claim 1, characterized in that: The capillary layer is arranged inside the thermal insulation material layer and is used to exchange heat with the interior of the skid-mounted laboratory. By exchanging heat with the interior of the skid-mounted laboratory, the temperature inside the skid-mounted laboratory is controlled. The capillary layer uses water as a heat exchange medium. The material of the capillary layer is polyethylene or polypropylene. The specification range of the capillary layer pipeline diameter is 1mm to 0.01mm.

9. The passive constant temperature and humidity system for a skid-mounted testing laboratory according to claim 1, characterized in that: The heat pump is used to drive the heat exchange medium in the capillary layer to flow, thereby realizing heat exchange between the capillary layer and groundwater.

10. The passive constant temperature and humidity system for a skid-mounted testing laboratory according to claim 1, characterized in that: The temperature control range of the skid-mounted testing laboratory is 23°C ± 5°C, and the humidity control range of the skid-mounted testing laboratory is 65.0% ± 4%.

Images