Pu oil wells dedicated pressure test vehicle control system with the rapid development of industrial automation applications increase, the previous manual pressure test pump in industrial production can not meet the test requirements. In the pursuit of production efficiency, the degree of automation of the pressure test, test parameters accuracy, security, and other indicators put forward higher requirements, the company produces intelligent pressure test system is adapted to the requirements of the product of this development, the system with high accuracy, high reliability, automatic, etc., having a pressure parameter setting, stress testing process real-time display, data logging, printing, storage, query and other functions, it is well to achieve a new stress test process control and industrial intelligence the perfect combination, widely used in petroleum equipment manufacturing, aerospace, defense, shipbuilding, nuclear power, petrochemical, metallurgy and other fields. For the user's specific requirements: Test pieces - BOP and fracturing manifold maximum capacity of about 860L, minimum volume 10L, the test pressure is less than or equal to 100Mpa, pressure rise time control in 30 minutes or less words. High-pressure pump flow is about 30L/min, high-pressure pump power needed 47Kw, such as the need to configure the explosion-proof motor, one high-pressure pump purchase cost is relatively high, the second is more troublesome field electrical connection; three small containers in the test, excessive flow due to high pressure pump, pressure rises too fast, it is prone to pressure overshoot, planted a lot of security risks. Generally recommend that users using low water, high pressure low flow pump pressurized in this way, its advantages: First, pressure rise speed controllable; two complete sets of equipment purchase cost is relatively low. The following is my company's BOP and fracturing test system manifold basic principles and operating processes. (1) Water Injection System: When the test when the maximum volume, low pressure injection time control in 20 minutes or less, low pressure injection pump flow matching of 50L/min, if the water pressure is 2Mpa words, the motor power is 3Kw. Low pressure injection pump can be used piston pump, multistage centrifugal pumps can also be used. To reduce the cost of procurement of equipment is generally recommended optional multi-stage centrifugal pumps, Southern Pump CDLF3-33 stainless steel multi-stage centrifugal pumps, theoretical flow 55L / h, lift 150 m, motor power 3Kw. How it works: When the injection pump is started, the media through the injection check valve to manifold BOP or fracturing the water supply, when the injection pressure reaches the set value, injection pump shutdown, the check valve will automatically water pipes and BOP or fracturing manifold disconnected. Second, in the course of the check valve pressure generated across the greater the pressure difference, pressure the better the performance. (2) pressurization system: Because the test manifold BOP or fracturing the maximum capacity of about 860L, as the static pressure test, the water in the container has a compression ratio, when the pressure is pressurized to 100Mpa, the water compression ratio was 0.04 in theory, you need to go down to the container water 35L, if the boost time control in 5-8min then need to provide the high-pressure pump flow rate per minute is about 5-6L, this high-pressure pump selection should be three plungers high-pressure pump, model: 3DSY300/110, technical parameters: maximum working pressure 110Mpa, flow 5L/min, motor power 11Kw, belt drive. Pressurization system and BOP or fracturing manifold between the need to install a pneumatic valve and check valve works: When the booster pump starts, pneumatic shut off valve is energized, the medium through the check valve to the BOP or fracturing within the pressurized manifold, when the boost pressure reaches the set value, the booster pump shutdown, the check valve will automatically pressurized piping and manifold fracturing BOP or disconnect power pneumatic valve open, one in the packing process, not a long time at high pressure booster to extend the life of high-pressure pump, the second is pressed again, the booster pump without load starts, the same will extend the high-pressure pump life; three-way valve is generated across the greater the pressure difference, pressure the better the performance. Second, the process, the main technical parameters configuration: (1) the overall use pry boxing style base, remote operation (2) Process: Under stress testing procedures before doing the preparatory work. => Select manual or automatic control knob on the laptop of the objectives set parameters. => According to the test manifold BOP or fracturing choose whether to activate the volume size of the low-pressure injection pump, low pressure water when needed, start low pressure injection pump, injection pump running indicator light, when water pressure reaches the set, the automatic stop and exhaust. => When you select Auto, start high-pressure pump, high pressure pump operation indicator lights, pumps, valves and container terminal unloading unloading valve closed when the BOP or fracturing within the manifold pressure reaches the set test pressure, high pressure pump is stopped, the pump end valve opens, removable high-pressure pump head pressure, BOP or fracturing manifold is mandatory packing state. => Dwell time reaches the set requirements, removable test BOP or fracturing pressure within the manifold. => Test ends. => Print out the curve of the test report. (3) The main technical parameters: a, driving the total power 15Kw, 380V; b, the maximum working pressure testing machine: 110Mpa; c, test medium: generally room temperature water, the emulsion can also be used, rust water, etc.; d, Pressure test accuracy: ± 0.5% FS; e, high-pressure pump technical parameters: maximum output pressure 110Mpa, output flow 300L / h, power 11Kw, pulley gear, explosion-proof motor. f, low-pressure injection pump technical parameters: maximum output pressure 2Mpa, the maximum output flow rate 3.3 cubic meters / hour, power 3Kw, explosion-proof motor. (4) Pressure test system main components and features: The stress test system consists of electrical control systems, domestic high-pressure pump, inlet check valves, pneumatic valves MAH, Germany, Germany MAH pneumatic unloading valve, manual unloading valve , high pressure filters, pressure gauges, pressure hard and soft tubes, pressure sensors, low pressure injection pump, low-pressure water injection check valve imports, water filters, stainless steel water tank, container body and other components. a, electrical control system is composed of Mitsubishi PLC logic controllers, communication modules, 14-inch notebook computers, electrical control components and other components, the main function is based on the test requirements to achieve the system's automatic boost, pressure, pressure relief, and real-time show the test pressure, dwell time and storage, the system also has a manual, automatic conversion, emergency stop, overpressure alarm, automatic unloading functions. b, high pressure pump: Model 3DSY300/110, technical parameters: maximum output pressure 110Mpa, the maximum output flow 300L / h, power 11Kw. High-pressure pump pulley gear, explosion-proof motor. c, imports of high-pressure check valve: the ability to automatically disconnect between the output and the pressure of the test vessel. d, imported pneumatic unloading valve: pressure test in the staging process through the pre-set, the control system can be after the end of each packing container unloading or set (unloading or unloading controllable), you can achieve remote control, to protect the security of the testing process. System at any time within the pneumatic booster unloading valves are closed, the system pressure test after each time, were forced to drop the pressure vessel unloading target, low-pressure water injection can also be used as an exhaust valve. e, pump end pneumatic valve: When the system is holding pressure state, the pump end pneumatic valve automatically dropped head pressure pump high-pressure pump, high pressure pump head to avoid a long period of high pressure, improve the high pressure pump life. f, the manual unloading valve: the fluid flow is cut off, as a backup, when the pneumatic unloading valve becomes inactive, the system can be manual emergency pressure drop. Will close the valve handle clockwise and counterclockwise rotation handle will open the needle valve. g, high table: gauge pressure of the display system, the use of the table range of not more than 2/3. h, pressure filter: Prevents relief when the BOP or impurities within the manifold into the unloading valve, unloading valve to improve the life of the trial. i, water filter: water filter is to prevent debris from entering the high-pressure pump and executive institutions, improve the service life of equipment j, low-pressure injection pump: Model CDLF3-33, Technical parameters: maximum output pressure 2Mpa, the maximum output Flow 3.3m cubic meters / hour, power 3Kw, explosion-proof motor. (5) Pressure test devices have features: (1) has a manual or automatic pressurization pressure function. (2) stress test segment can be set within the range test procedures (up to 5 segments), pressurized system will automatically step-up, shutdown, packing. (3) system with automatic unloading function, automatic unloading containers, emergency stop and overpressure automatic unloading function. (4) during the pressure test preset dwell time can be set freely (in seconds). (5) with real-time pressure display, curve display, time display, work status display. (6) Pressure test device has a memory function that can store test parameters and results. (7) The system has a pressure setting, calibration, software zero correction. (8) has a system overpressure fault status feedback status alarm. (9) with the measured container packing packing stage to automatically determine the state function. Note: Only low-pressure injection pump manual control, injection pressure can be set, when the water pressure reaches the set value, the low-pressure injection pump automatically shut down. (6) Pressure test device electrical control system main configurations: (a) electrical control cabinet (mainly electrical components used Chint) 1 set (2) Mitsubishi programmable logic controller 1 set (3) Thinkpad 14 inch laptop 1 set ( 4) Industrial grade A / D board (12 speed) 1 set (5) communication modules and cables 1 set (6) Canon A4 monochrome laser printer 1 set (7) control cable, signal lines 8 sets (8) thermal containers body (skid-mounted, length x width x height: 4000x1900x2000mm) 1 set (7) The main parameters and associated high-pressure pump actuator configurations: (1) high-pressure pump technical parameter: Model Pressure Flow Power Notes 3DSY300/110 110MPa 300L / h 11KW-proof motor, containing 0.8 cubic stainless steel tanks, water piping, wearing parts, etc. (2) automatic control system Accessories: Name Quantity Remark pressure check valve 15000Psi 1 sets of imported parts manual pressure relief valve 15000Psi 1 sets of imported parts pneumatic cut-off valve 15000Psi 1 set of German MAH pneumatic unloading valve 15000Psi 1 set of German MAH pressure filter 15000Psi 1 sets of imported parts shockproof pressure gauge 160Mpa 1 只 accuracy of 1.6%, the surface pressure sensor 150Mpa 1 只 150mm Accuracy 0.5% high-pressure hose 120Mpa 1 根 20 rice, imported parts, thread M22X1.5 (inside) ultra-quiet air pump 0.8Mpa 1 set of tank 0.8Mpa 1 set Note: The user needs to provide BOP or manifold inlet thread size. Germany MAH pneumatic valve operator console (3) water filtration device: with the South stainless steel high-pressure multistage pump 1 set (with the use of low-pressure injection), import injection check valve, water pipelines, multistage centrifugal pump Model: CDLF3 -33, technical parameters: Maximum flow 3.3 cubic meters / hour, maximum output pressure 2Mpa, with stainless steel bag filter 1 (containing 2 bag). Water filtration devices Note: The above is the main configuration, but details may appear inconsistent with this Agreement, there may be deviation occurs, but does not affect the use of equipment. Mobile Car Pressure test system job site (Changqing Oilfield) three, services and others: (a) Software information: (a) providing a pressure test device operating instructions; (2) to provide high-pressure pump, injection pump and its associated execution institutional information; (3) to provide electrical console electrical schematics, electrical components list. (Two) equipment service work: (1) provided by the supplier is reliable and advanced technology, equipment and materials are new, and meet the requirements of the contract. (2) After the arrival of equipment, complete quality testing equipment and system debugging user representatives on-site under the supervision of, and obtain user-party certification. (3) After the arrival of equipment, the supplier and the user representatives in the use of on-site inspection out of the box. (4) service commitment: Pressure Testing Device "three guarantees" period from the date of acceptance device through the 12 months, but complete sets of equipment except wearing parts. (5) In the "three guarantees" quality problems occurred during the period, the supplier free of charge repair, maintenance, including replacement of equipment parts, technical service expenses incurred shall be borne by the supplier. Normal replacement of wearing parts as well as the demand side itself damage caused by incorrect operation are not included. (6) Since the user side causes various technical indicators do not meet the requirements of the contract, and not within the scope of quality assurance. But supply-side obligation to help troubleshoot user side, to resume production, the party responsible for costs incurred by the user. (7) complete equipment commissioning work by the supplier of the technical staff responsible for debugging client-side personnel to participate and provide the necessary assistance. Commissioning process to the control system for all functions to be tested and tested and should meet the technical requirements stipulated in the contract.