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Hebei Biaohui Rubber and Plastic Products Co., Ltd  

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Hand Pump/Manual Pressure Test Pump 

Payment Terms: T/T,WU 
Place of Origin: Hebei, China (Mainland) 
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Product Detail

Model No.: 40-500mm
Packing: Wooden case packaging
Place of Origin: China
purpose: Lugeon Test equipment
Means of Transport: Ocean,Land,Air
Brand Name: BIAOHUI
Model Number:: 50/60/65/75/90/100/108/127/...
Type: Single packer and double pa...

Adapted to a wide range of B, N, H, P drilling hole diameters and other hole dia. can be customized. The packers are highly flexible and can be inflat

brief introduction




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Water pressure test is a kind of in-situ test in which the water pressure is put into the borehole in a high-pressure way, and the development and permeability of rock mass fractures are known according to the calculation of water absorption of rock mass. The water pressure test is to isolate a certain length of drilling test section with a water stop device, and then use a fixed water head to press water into this section of drilling. The water seeps into the rock body through the cracks around the hole wall, and the final seepage volume will tend to a stable value. The strength of rock mass permeability can be determined according to the water pressure head, the length of the test section and the stable seepage volume. It is usually expressed in terms of water permeability q, and the unit is Lu. It is defined as: when the pressure of water pressure is 1MPa, and the water injected per meter length per minute is 1L, it is called 1Lu. Q=Q/(P * L), where q is the water permeability, Lu; Q is the pressure flow, L/min; P is the total pressure acting on the test section, MPa; L is the length of the test section.




Classification of water pressure test: simple water pressure test, single-point water pressure test and five-point water pressure test.




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1. Pre-test stage




Slowly raise the water pressure in the pipeline to the specified test pressure and stabilize it for 30min. During this period, if there is a pressure drop, water can be injected to supplement the pressure, which shall not be higher than the test pressure;




Check whether there is water leakage or damage at the pipe interface and fittings;




In case of water leakage and damage, stop the pressure test in time, find out the cause and take corresponding measures, and then retest the pressure.




2. Main test stage




Stop water injection and make up pressure, and keep it stable for 15min. When the pressure drop does not exceed the allowable pressure drop value after 15min, reduce the test pressure to the working pressure and keep it constant for 30min. Conduct visual inspection. If there is no water leakage, the hydraulic test is qualified. [1]




3, Main technical parameters:




Sealing hole diameter 30-200mm (can be processed according to user requirements)




Working pressure 1-10MPa (can be processed according to user requirements)




The working flow can be 3-4.5 tons of grouting per hour




Hole sealing depth 1-800m

SIZEI.D(mm)O.D(mm)Expansion Range(mm)Aperture(mm)W.P(Mpa)T.P(Mpa)B.P(Mpa)
φ16-216±0.530±1.550  +8/-24081632
φ16-416±0.536±1.550  +8/-240203040
φ19-219±0.536±1.560  +8/-24581632
φ19-419±0.540±2.060  +8/-245203040
Φ22-222±0.539±2.080  +8/-45061224
Φ22-422±0.545±2.080  +8/-450203040
Φ25-225±0.542±2.090  +8/-46561224
Φ25-425±0.548±2.085  +8/-455162432
Φ32-232±0.550±2.090  +8/-46061224
Φ32-432±0.554±2.090  +8/-460162432
Φ38-238±0.555±2.095  +8/-46551020
Φ38-438±0.560±2.095  +8/-465162432
Φ45-245±0.563±2.0100  +8/-4754816
Φ45-445±0.569±2.0100  +8/-475162432
Φ51-251±0.569±2.0110  +8/-4904816
Φ51-451±0.575±2.0110  +8/-490162432
Φ64-264±0.584±2.0120  +8/-41003612
Φ64-464±0.590±2.0120  +8/-410081216
Φ76-276±0.594±2.0130  +8/-51103612
Φ76-476±0.599±2.0130  +8/-511081216
Φ89-289±0.5109±2.0140  +8/-51303612
Φ102-2102±0.5122±2.0160  +8/-51503612
 


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Tel: 86-318-4363388
Mobile: 150 7580 3959
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Company Info

Hebei Biaohui Rubber and Plastic Products Co., Ltd [China (Mainland)]


Business Type:Manufacturer
City: Hengshui
Province/State: Hebei
Country/Region: China (Mainland)

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