Multi-gear regulation and control rock-soil thermophysical property tester

Abstract

The utility model relates to a tester, in particular to a multi-gear regulation and control rock-soil thermophysical property tester. The utility model provides a multi-gear regulation rock soil thermophysical property tester, which comprises a shell, a temperature measuring ball valve, a circulating pump, a heater and a heat meter which are sequentially communicated through a pipeline are detachably arranged in the shell, and a water inlet pipe of the temperature measuring ball valve and a water outlet pipe of the heat meter both penetrate through the shell and extend to the outside of the shell. The temperature measuring ball valve and the heat meter are in signal connection with a configuration screen, and the configuration screen is embedded in the side wall of the shell. The utility model mainly aims to provide a multi-gear regulation and control rock-soil thermophysical property tester, and solves the technical problems that the existing multi-gear regulation and control rock-soil thermophysical property tester is large in size, high in weight and unfavorable for loading and transportation.

Description

Technical Field

[0001] This utility model relates to a testing instrument, specifically a multi-level adjustable geothermal property testing instrument. Background Technology

[0002] The standard GB50366-2009, "Technical Specification for Ground Source Heat Pump System Engineering," requires geotechnical thermal response testing. A multi-stage adjustable geotechnical thermal property tester is a device used to measure soil thermal property parameters, primarily for the design and optimization of ground source heat pump systems. By measuring parameters such as the soil's thermal conductivity coefficient and borehole thermal resistance, this tester helps designers more accurately determine the length of underground heat exchangers, thereby improving the efficiency and performance of the ground source heat pump system. However, existing multi-stage adjustable geotechnical thermal property testers are large and heavy, making them inconvenient for transportation. Utility Model Content

[0003] The main purpose of this invention is to provide a multi-level adjustable geothermal property tester, which solves the technical problems of existing multi-level adjustable geothermal property testers being large in size and heavy in weight, making them unsuitable for loading and transportation.

[0004] To achieve the above objectives, this utility model provides a multi-level adjustable geotechnical thermal property tester, including a housing. Inside the housing, a temperature measuring ball valve, a circulating pump, a heater, and a heat meter are detachably installed and connected in sequence through pipelines. The inlet pipe of the temperature measuring ball valve and the outlet pipe of the heat meter both pass through the housing and extend to the outside of the housing. The temperature measuring ball valve and the heat meter are signal connected to a configuration panel, which is embedded in the side wall of the housing.

[0005] Preferably, the housing is made of stainless steel and includes a U-shaped upper shell, a U-shaped lower shell, and a waterproof gasket. The U-shaped upper shell is fastened to the top of the U-shaped lower shell, and the U-shaped upper shell and the U-shaped lower shell are connected by bolts.

[0006] The edge of the U-shaped upper shell side plate is integrally formed with a first connecting plate, and the first connecting plate has multiple first clearance holes;

[0007] The edge of the U-shaped lower shell side plate is integrally formed with a second connecting plate. The second connecting plate has the same shape and corresponding position as the first connecting plate. The second connecting plate is provided with a second clearance hole corresponding to the first clearance hole.

[0008] A waterproof gasket is placed between the first connecting plate and the second connecting plate.

[0009] Preferably, the inlet pipe of the temperature measuring ball valve is connected to the outlet of the buried pipe, and the inlet pipe of the temperature measuring ball valve is also detachably connected to the water injection hopper. A filter assembly is also provided between the water injection hopper and the inlet pipe of the temperature measuring ball valve.

[0010] Preferably, the filtration assembly includes a filter and a check valve connected in sequence.

[0011] Preferably, the outlet pipe of the heat meter is communicated with the inlet of the ground pipe, and an exhaust valve is arranged at the outlet of the ground pipe.

[0012] Preferably, the heater is a six-grade adjustable PTC ceramic heater.

[0013] Preferably, the inside of the shell, the pipeline and the circulating pump are all insulated by rubber plastic insulation material.

[0014] Preferably, the circulating pump is a three-grade adjustable shield pump.

[0015] Preferably, the configuration screen is connected with the temperature measuring ball valve and the heat meter signal through shielded twisted pair.

[0016] The utility model discloses obtained the beneficial effect is:

[0017] The utility model discloses small, light in weight, and its weight is less than 30kg, and various mode transportation is convenient, can reduce the equipment transportation expense of the test unit when going out to test, and the on-site handling expense.

[0018] The shell is made of stainless steel material, is not easy to rust, prevents the shell from being corroded and being broken, prevents rainwater from entering the inside of the shell, prevents internal parts from being scaled and corroded, is convenient for protecting the parts inside the equipment, the shell adopts double U-shaped assembly design, is convenient for the disassembly of the shell, further convenient for the maintenance and replacement of internal parts, and the waterproof pad is arranged in the connecting gap between the upper shell and the lower shell, further prevents rainwater from entering the shell, and internal parts can be better protected. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further explained in detail in connection with the drawings and specific embodiment.

[0020] Figure 1 It is the schematic diagram of the internal structure of the multi-grade regulation and control rock-soil thermal physical property testing instrument disclosed by the embodiment of the utility model;

[0021] Figure 2 It is the schematic diagram of the shell of the multi-grade regulation and control rock-soil thermal physical property testing instrument disclosed by the embodiment of the utility model;

[0022] Figure 3 It is Figure 2 The enlarged view of A part in the middle;

[0023] Figure 4 It is still another schematic diagram of the shell of the multi-grade regulation and control rock-soil thermal physical property testing instrument disclosed by the embodiment of the utility model.

[0024] 1. Housing; 11. U-shaped upper housing; 111. First connecting plate; 12. U-shaped lower housing; 121. Second connecting plate; 122. Second clearance hole; 13. Waterproof gasket; 2. Temperature measuring ball valve; 3. Circulating pump; 4. Heater; 5. Heat meter; 6. Configuration panel; 7. Bolt; 8. Buried pipe; 81. Exhaust valve; 9. Water injection hopper; 91. Filter assembly. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] like Figures 1-4 As shown, this utility model discloses a multi-level adjustable geotechnical thermal property tester (hereinafter referred to as the tester), including a housing 1, which is made of 304 stainless steel. Please refer to... Figures 2-4 The housing 1 includes a U-shaped upper shell 11, a U-shaped lower shell 12, and a waterproof gasket 13. The U-shaped upper shell 11 is fastened onto the U-shaped lower shell 12, and the two shells are detachably connected by bolts 7. The upper and lower shells can be assembled into a complete housing. The edges of the two side panels of the U-shaped upper shell 11 are integrally formed with first connecting plates 111, which have multiple first clearance holes. The edges of the two side walls of the U-shaped lower shell 12 are integrally formed with second connecting plates 121, which are identical in shape to the first connecting plates 111 and are mutually compatible. The second connecting plates 121 have multiple second clearance holes 122. When the U-shaped upper shell 11 is fastened onto the U-shaped lower shell 12, the positions of the second connecting plates 121 and 111 correspond, as do the positions of the first and second clearance holes 122.

[0027] In use, the waterproof pad 13 is placed between the first connecting plate 111 and the second connecting plate 121, and then the bolt 7 is passed through the first clearance hole and the second clearance hole 122 in sequence, and the bolt 7 is tightened with a nut to complete the assembly of the shell 1.

[0028] The shell 1 is detachably provided with a temperature measuring ball valve 2, a circulating pump 3, a heater 4 and a heat meter 5 which are sequentially communicated through pipelines. The water inlet pipe of the temperature measuring ball valve 2 and the water outlet pipe of the heat meter 5 both pass through the shell 1 and extend to the outside of the shell 1. The pipelines, the water inlet pipe and the water outlet pipe are all made of rust-proof materials such as stainless steel, PPR, copper and the like. The temperature measuring ball valve 2 and the heat meter 5 are both connected with the configuration screen 6 through shielded twisted pair wires, which can reduce signal interference. The temperature measuring ball valve 2 and the heat meter 5 transmit relevant information to the configuration screen 6, which carries Kunlun Tongtai software and can store data.

[0029] The water inlet pipe of the temperature measuring ball valve 2 is communicated with the water outlet of the buried pipe 8. The water inlet pipe of the temperature measuring ball valve 2 is also detachably communicated with a water filling bucket 9 which is arranged outside the shell 1. When used, water is poured into the water filling bucket 9 and can flow into the water inlet pipe of the temperature measuring ball valve 2 from the water filling bucket 9. Preferably, a filtering assembly 91 is further arranged between the water filling bucket 9 and the water inlet pipe of the temperature measuring ball valve 2. The filtering assembly 91 comprises a filter and a check valve. In this case, water flows into the water inlet pipe of the temperature measuring ball valve 2 after passing through the filter.

[0030] The water outlet pipe of the heat meter 5 is communicated with the water inlet of the buried pipe 8. An exhaust valve 81 is further arranged at the water outlet of the buried pipe 8. The exhaust valve 81 is used for discharging gas in the pipeline.

[0031] As a preferred solution, the heater 4 is a six-grade adjustable PTC ceramic heater. Each grade has a power of 1.25kw. Different heating powers are selected according to the depth of the buried pipe 8. The selection method is that the depth of the buried pipe 8*50-80w / m. For example, if the depth is 100m, the heating power is 5-8kw. During testing, 6.25kw can be used.

[0032] As a preferred solution, the inside of the shell 1, the pipeline and the circulating pump 3 are all insulated by rubber plastic insulating material.

[0033] As a preferred solution, the circulating pump 3 is a shielded pump which can be adjusted in three grades. The maximum power is 335w. During use, the power is selected according to the depth and the pipe diameter of the buried pipe 8. The shielded pump can reduce the noise during the operation of the equipment.

[0034] As a preferred solution, the heat meter 5 is used to directly measure the specific heat value applied to the buried pipe 8 by the heater 4. The value is calculated by flow, temperature difference between inlet and outlet and through an integrator.

[0035] As a preferred solution, the water filling bucket 9 is welded by a DN100 stainless steel pipe. The connection between the water filling bucket 9 and the water inlet pipe of the temperature measuring ball valve 2 is screw connection, which reduces the volume of the water filling bucket 9 in the body of the tester. The water filling bucket 9 is used to fill water into the tester during testing.

[0036] In use, the test well around the site, put the tester on the simple table. The table height is preferably more than 300mm from the ground, to prevent rain on the device harm, but also facilitate the system exhaust, if conditions can be set up a tent, good rain and wind measures. At this point to ensure that the instrument on the switch are in the off state, especially the heater 4 switch must be in the off state.

[0037] First, the power cord of the tester is connected with the external power supply, the power cord is five-core wire. When the external power supply is 380V power supply, the zero line and ground line of the five-core wire are connected with the zero line and ground line of the external power supply, the other three lines of the five-core wire are connected with the A, B and C phase of the external power supply; if the power supply is 220V, the three lines of the five-core wire are connected together, and then connected to the live wire of the external power supply, and then wrapped with waterproof tape.

[0038] Close the air switch on the tester body to send power, at this time pay attention to whether the circulating pump 3 is running, if it is running, close the circulating pump 3.

[0039] Connect the water inlet pipe of the temperature measuring ball valve 2 with the water outlet of the buried pipe 8, and connect the water outlet pipe of the heat meter 5 with the water inlet of the buried pipe 8, if connected reversely, there is no flow.

[0040] Install the water injection bucket 9, and slowly inject water into the water injection bucket 9. Check whether there is a leak during the water injection process, if not, wrap the exposed part with rubber insulation, and wrap it with tape to isolate the influence of atmospheric temperature on the test.

[0041] If there is no bubble in the water injection bucket 9 during the water injection process, start the circulating pump 3, and bubbles will come out of the water injection bucket 9, repeat the above operation to discharge the bubbles in the system.

[0042] After the exhaust is completed, continue to open the circulating pump 3, and set the data storage time interval of the configuration screen 6, at this time the "flow" item in the test interface on the configuration screen 6 should have a value, otherwise it means that the exhaust is not complete. Record the initial temperature of the soil, after 120 minutes, open the heater 4, the heater 4 has a total of 6 1P switch control, each switch represents 1.25kW, the opening power is determined according to the drilling depth.

[0043] When the field test is completed, first close the switch of the heater 4, circulate for 10 minutes, let the heater 4 cool down, then close the switch of the circulating pump 3, and then protect the heater 4. Then cut off the connection between the tester and the buried pipe 8.

[0044] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

Claims

1. A multi-graded regulation geotechnical thermal property tester, characterized in that, The utility model provides a temperature measuring and heating device, including shell (1), detachable with temperature measuring ball valve (2), circulating pump (3), heater (4) and heat meter (5) that pass through pipeline communication in proper order are established in shell (1), the water inlet pipe of temperature measuring ball valve (2) and the water outlet pipe of heat meter (5) all pass through shell (1) and extend to the outside of shell (1), temperature measuring ball valve (2) and heat meter (5) are signal connected with configuration screen (6), configuration screen (6) is embedded in the lateral wall of shell (1), The shell (1) includes a U-shaped upper shell (11), a U-shaped lower shell (12), and a waterproof pad (13). The U-shaped upper shell (11) is buckled on the top of the U-shaped lower shell (12). The U-shaped upper shell (11) and the U-shaped lower shell (12) are connected by bolts (7). The edge of the side plate of the U-shaped upper shell (11) is integrally formed with a first connecting plate (111). The first connecting plate (111) is provided with a plurality of first avoiding holes. The edge of the side plate of the U-shaped lower shell (12) is integrally formed with a second connecting plate (121). The second connecting plate (121) is the same shape as the first connecting plate (111) and corresponds in position. The second connecting plate (121) is provided with a second avoiding hole (122) corresponding to the first avoiding hole. The waterproof pad (13) is placed between the first connecting plate (111) and the second connecting plate (121).

2. The multi-configuration geotechnical thermal property testing instrument of claim 1, wherein, The water inlet pipe of the temperature measuring ball valve (2) is connected to the water outlet of the buried pipe (8). The water inlet pipe of the temperature measuring ball valve (2) is also detachably connected to the water inlet pipe of the water injection bucket (9). A filter assembly (91) is arranged between the water injection bucket (9) and the water inlet pipe of the temperature measuring ball valve (2).

3. The multi-protocol geothermal thermal property test apparatus of claim 2, wherein, The filter assembly (91) includes a filter and a check valve connected in sequence.

4. The multi-protocol geothermal thermal property test apparatus of claim 1, wherein, The water outlet pipe of the heat meter (5) is connected to the water inlet of the buried pipe (8). An exhaust valve (81) is arranged at the water outlet of the buried pipe (8).

5. The multi-configuration geotechnical thermal property testing instrument according to any one of claims 1-4, characterized in that, The heater (4) is a six-grade adjustable PTC ceramic heater.

6. The multi-configuration geotechnical thermal property testing instrument according to any one of claims 1-4, wherein, The inside of the shell (1), the pipeline, and the circulating pump (3) are all insulated by an elastoplastic insulation material.

7. The multi-configuration geotechnical thermal property testing instrument according to any one of claims 1-4, wherein, The circulating pump (3) is a three-grade adjustable shield pump.

8. The multi-configuration geotechnical thermal property testing instrument of any one of claims 1-4, wherein, The configuration screen (6) is signal connected to the temperature measuring ball valve (2) and the heat meter (5) through shielded twisted pair wires.

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