Manifold system of low pressure suction and high pressure discharge

Abstract

The present invention discloses a manifold system of low pressure suction and high pressure discharge, which includes a low pressure manifold, a high pressure manifold and a plunger pump. The low pressure manifold transports media into the hydraulic end of the plunger pump. The hydraulic end of the plunger pump is provided with two discharging ports, which are connected into the high pressure manifold. The present invention has the following beneficial effects: the five-cylinder plunger pump at 5000 HP or above ensures the high pressure and large displacement power source for the fracturing equipment. The dual discharge form of the five-cylinder plunger pump achieves the smooth discharge of liquid from the five-cylinder plunger pump and prevents sand from accumulating within the low pressure manifold, meanwhile ensures the large displacement of the fracturing equipment. The low pressure manifold employs a large drift diameter manifold of 10 inches, with the double suction of an U-type tube to realize sufficient large displacement liquid supply from the five-cylinder plunger pump.

1 . A manifold system of low pressure suction and high pressure discharge, comprising a low pressure manifold, a high pressure manifold and a plunger pump, the low pressure manifold transports media into a hydraulic end of the plunger pump, the hydraulic end of the plunger pump is provided with two discharging ports, which are connected into the high pressure manifold, the pipe diameter of the low pressure manifold is at least 10 inches. 
     
     
         2 . The manifold system of low pressure suction and high pressure discharge according to  claim 1 , wherein the plunger pump is a quintuplex plunger pump. 
     
     
         3 . The manifold system of low pressure suction and high pressure discharge according to  claim 1 , wherein the power of the plunger pump is at least 5000 HP. 
     
     
         4 . (canceled) 
     
     
         5 . The manifold system of low pressure suction and high pressure discharge according to  claim 4 , wherein the low pressure manifold comprises a suction manifold, a main manifold and connecting pipes, wherein the suction manifold is connected to one end of the main manifold, the connecting pipes are disposed on the main manifold, and other ends of the connecting pipes are connected to the hydraulic end of the plunger pump. 
     
     
         6 . The manifold system of low pressure suction and high pressure discharge according to  claim 5 , wherein the pipe diameters of the suction manifold and the main manifold are both at least 10 inches. 
     
     
         7 . The manifold system of low pressure suction and high pressure discharge according to  claim 4 , wherein the suction manifold comprises a union, a valve, a U-type tube and a connecting elbow, wherein one end of the U-type tube is connected to the union and the valve, and the other end of the U-type tube is connected to the main manifold through the connecting elbow. 
     
     
         8 . The manifold system of low pressure suction and high pressure discharge according to  claim 7 , wherein the valve is a butterfly valve. 
     
     
         9 . The manifold system of low pressure suction and high pressure discharge according to  claim 5 , wherein the main manifold comprises a buffer and a main pipeline, wherein the buffer is disposed between a suction manifold and connecting pipes, and the buffer is connected to the main pipeline. 
     
     
         10 . The manifold system of low pressure suction and high pressure discharge according to  claim 4 , wherein each connecting pipe is provided with a male union, and output ends of the connecting pipes are connected to the hydraulic end of the plunger pump through connecting flanges. 
     
     
         11 . The manifold system of low pressure suction and high pressure discharge according to  claim 1 , wherein the two discharging ports of the plunger pump are disposed on a two separate horizontal ends of the hydraulic end respectively. 
     
     
         12 . The manifold system of low pressure suction and high pressure discharge according to  claim 11 , wherein the high pressure manifold comprises a manifold tee, a joint, a first elbow, a high pressure main pipe, a second elbow, a high pressure straight pipe and a third elbow, wherein a first port of the manifold tee is connected to one end of the high pressure main pipe, the other end of the high pressure main pipe is connected to the third elbow, the third elbow is connected to the second elbow through the high pressure straight pipe, a second port of the manifold tee is connected to the first elbow through the joint, and the third port of the manifold tee is the output end. 
     
     
         13 . The manifold system of low pressure suction and high pressure discharge according to  claim 12 , wherein the two discharging ports of the plunger pump are connected to the high pressure manifold through flange tees and flange straight-throughs, respectively. 
     
     
         14 . The manifold system of low pressure suction and high pressure discharge according to  claim 13 , wherein the flange tee is connected to the first elbow, the flange straight-through is connected to the second elbow.