Who uses the pressure test pump What is the performance of the electric pressure test pump?

Shanghai Sunshine Pump Manufacturing Co., Ltd. is located in Jinshan Industrial Park, Shanghai, which is a well-known large-scale diversified enterprise integrating research, development, production, sales and service in China, with a registered capital of 80 million yuan. The leading products include: screw pumps, diaphragm pumps, submersible pumps, magnetic pumps, sewage pumps, chemical pumps, multistage pumps, self-priming pumps, gear oil pumps, metering pumps, sanitary pumps, vacuum pumps, submersible pumps, rotary lobe pumps and other categories.

The products have been recognized by various professional certifications and customers with superior performance and excellent quality. The company has a number of pump experts and all kinds of senior engineers, continuous development and manufacturing, upgraded products have come out every year. The company has a domestic high-level pump performance testing center, and all products adopt advanced designs such as CAD design software and CFD computational fluid dynamics software

Our company has been doing pressure test pumps for more than 50 years, step by step, in line with the trust of customers, whether it is old customers or new users, the response has been very good. In 2014, on the basis of the original 2D-SY electric pressure test pump, Jinrui company developed and produced a new 4D-SY vertical electric pressure test pump, the pressure test pump is simple and compact, easy to maintain, easy to overhaul and disassemble, high and low pressure flow are greater than the old 4D pressure test pump, the combination of vertical motor and pendulum reducer, the kinetic energy is more powerful, the water injection is more time-saving, and the pressure boost speed is greatly improved. In 2018, on the basis of the original 3D type, the disadvantages of the original 750 series high-pressure and high-flow electric pressure test pump such as poor heat dissipation performance and inconvenient maintenance were improved, so as to make the performance of the 2019**750 series high-pressure and high-flow electric pressure test pump more stable.

Kaiquan has to be better at some pressure test pumps. Panda's main pipe pumps and axial flow pumps are better.

I think it's good to test the pressure pump for a long time. It depends on the amount of work you choose or the scope of the pressure test to choose for yourself. There are electric ones, and there are hand-pressed ones, depending on how you choose.

Shanghai Woquan Pump Industry, every time I go, there will be customer service to explain all the time, what are the improvements, what are the new products, and they can really be used.

The pressure test pump has the characteristics of compact structure, reasonable, labor-saving operation, light weight, convenient maintenance, rust prevention, and the electric pressure test pump is driven by a motor, which greatly improves the work efficiency.

The electric pressure test pump is a reciprocating piston pump, the motor drives the plunger, drives the movement of the slider and then injects water into the pressure test object, so that the pressure gradually rises. The machine is composed of a pump body, a switch, a pressure gauge, a water tank, a motor, etc.

Electric pressure test pump (hereinafter referred to as pressure test pump) is suitable for water or hydraulic oil medium, pressure test on various pressure vessels, pipelines, valves, etc., and is also used as hydraulic energy to provide the required pressure, suitable for chemical, construction, plumbing, petroleum and coal, smelting and shipbuilding and other industries.

As an intermediate medium in the hydraulic transmission system, the electric pressure test pump transmits and converts energy. At the same time, it also plays the role of lubrication, anti-corrosion, cooling and flushing of various parts of the hydraulic pressure test pump.

Its main attribute is suitable viscosity, good viscosity temperature characteristics viscosity is the first factor to consider when choosing hydraulic fluid. At the same working pressure, if the viscosity is too high, the resistance to the movement of the hydraulic components will increase, and the heating will accelerate the hydraulic pressure. The self-priming capacity of the pump decreases, and the pressure drop and power loss in the pipeline increase; If the viscosity is too low, it will increase the volume loss of the hydraulic pump, increase the leakage of the element, make the oil film of the sliding part thinner, and the support capacity will decrease.

Good lubricity (anti-wear): Hydraulic pressure test pumps have a large number of moving parts that need to be lubricated to prevent wear on relatively moving surfaces, especially for high-pressure systems, which have much higher requirements for the anti-wear performance of hydraulic oil.

Hydraulic pressure test pumps are also oxidized during use. The acidic substances produced by the oxidation of hydraulic oil can increase the corrosiveness of the metal, and the resulting sludge deposits can clog filters and small crevices. It doesn't work properly to make the hydraulic system, so good KYH performance is required.

Because hydraulic fluids are subjected to severe shear as they pass through pumps, valve holes, and clearances, they can cause some macromolecular polymers in the oil to break down, such as the molecules of tackifiers. It becomes a small molecule, which reduces the viscosity. When the viscosity is reduced to a certain level, the oil cannot be used, so good shear resistance is required.

1. Connect the pressure test pump: The pressure test pump is connected to the indoor water supply pipeline system from the lower pipe outlet of the indoor water supply pipeline through the connecting hose.

2. Inject water into the pipeline: open the main water valve to inject water into the indoor water supply pipe system, and at the same time open the pressure test pump pressure relief switch until the pipeline is filled with water and fill the water tank through the pressure test pump, immediately close the main water valve and the pressure test pump pressure relief switch.

3. Pressurize the pipeline: press the handle of the pressure test pump to pressurize the indoor water supply pipe system, and stop pressurizing when the pressure gauge of the pressure test pump indicates that the pressure reaches the test pressure (when the pressure is stopped.

4. Discharge the air from the pipeline: Slowly loosen the plug of each water outlet, and tighten the plug immediately when you hear the air being discharged or water spraying out.

5. Continue to pressurize the pipeline: operate the handle of the pressure test pump again to pressurize the indoor water supply pipe system, and stop pressurizing when the pressure gauge of the pressure test pump indicates that the pressure reaches the test pressure (when the pressure is stopped. Then complete the pressure test of the indoor water supply pipe system according to the specified inspection method.

After the test is completed, turn on the pressure relief switch of the pressure test pump to remove the pressure in the pipeline.

Correct use of manual pressure test pump:

1. Check whether the threaded connection is tightened before use, and drop a few points of oil at the piston and handle hinged pin shaft to facilitate lubrication.

2. The range of the pressure gauge should be greater than the pressure times.

3. Before the test, fill the test container with a clean test medium and exhaust the air as much as possible. The test circuit of the micro pressure vessel (volume 2 4L) should be equipped with an energy storage vessel of not less than 2 4, as shown in Figure 2. It is strictly forbidden to use media containing sediment and other debris.

4. Shake the handle, there should be no blocking phenomenon and other abnormal conditions, and the force should be stable and even, and it should not be knocked.

5. It is forbidden to exceed the rated pressure during normal operation.

6. If there is a slight water leakage in use, it should stop working immediately for inspection and repair.

7. After use, the water in the water tank and pump head should be drained, and a certain amount of oil (it is advisable to flow out from the discharge port) should be injected from the suction inlet of the pump.

8. When the ambient temperature is below 0, add appropriate antifreeze when the working medium is water, or take other antifreeze mistakes.

Manual high-pressure pressure test pump.

1. Before the pressure test pump is used, check in detail whether the joints of each part are tightened, whether the pressure gauge is normal, whether the inlet and outlet pipes are installed, and the working medium of the pump is 5 50 water, emulsion or oil with a kinematic viscosity of <45mm2 s. It is forbidden to use unclean water with sediment and other debris. 2 In order to improve the efficiency of pressure testing, the test container or equipment can be filled with water first, and then connected to the outlet pipe of the pressure test pump.

3 During the pressure test, if you find that there is a lot of air in the water, you can unscrew the water valve and release the air. 4. If any subtle water seepage is found during the pressure test, the work should be stopped immediately for inspection and repair, and it is strictly forbidden to continue to increase the pressure in the case of water seepage. 5. After the pressure test is completed, loosen the water valve first, and the pressure drops to avoid damage to the pressure gauge.

6. When the pressure test pump is not in use, drain the water in the pump and suck in a small amount of oil to prevent corrosion. 5. Fault and Elimination Method Cause of Failure Phenomenon Elimination Method The pressure of the pump rises too slowly or does not rise 1Insufficient water sources 2

The water source contains sediment or other debris 3Suction pipe intake 4Seal damaged 5

Valve does not seal 6The space of the loose test container on the street is too large1Add an appropriate amount of water 2

Swap the water 3Clear the air leak 4Replace the seal 5

Remove and inspect for cleaning or repair, replacement 6Tighten the streets 7Fill it with clean water and drain the air in the container first, and the holding time is too short or not pressurized1

Poor sealing of the check valve in the outlet street 2The drain valve is not closed tightly 3There is a leak in the pressure gauge street 4

There is a leak at the connection between the pump and the device under test1Cleaning, repairing or swapping 2Tighten the drain valve 3 properly

Tighten the fitting or swap the washer 4Check to rule it out.

The manual pressure test pump is composed of a pump body, a plunger, a sealing ring, a control valve, a pressure gauge, a water tank, etc.

Outline how it works separately:

When the plunger is lifted up through the handle, a vacuum is generated in the pump body, the water inlet valve opens the water inlet filter screen and the water inlet pipe enters the pump body, the water inlet valve is closed when the handle is pressed down, the water outlet valve is opened, the pressure water is output, and the device under test is entered, so that the work is carried out back and forth to achieve the pressure test of the rated pressure.

There is a screw that is not tightened in pressing.

The pressure test method of the pressure test pump pipeline is as follows:

1. Strength test: the pressure gauge should be installed at the lowest point of the pipeline system, and the pressure pump should be set near the pressure gauge; The pipe should be filled with clean water, and the air in the pipe should be thoroughly discharged; Increase the pressure to the test pressure with a pressurized pump, and then re-pressurize to the test pressure every 10 minutes, repeat twice; Record the pressure after 10 minutes and 40 minutes after the last pumping pressure, and the pressure difference should not be greater than MPa;

2. Tightness test: the test should be carried out immediately after the strength test is qualified; The pressure was recorded 2 hours after passing the strength test. At the end of this pressure-specific strength test, the pressure drop of the hail bond should not exceed MPa.

1.Before use, first tighten the switch clockwise.

2.The working medium used must be filtered by a 100-inch filter before it can be injected into the water tank, and the suction inlet must not leak out of the water surface.

3.It should not be used in the workplace with acid, alkali and corrosive substances.

4.After discontinuation, use kerosene or kerosene as a medium to filter.

According to the question you asked, the manufacturer will reply to the use and maintenance of the manual pressure test pump as follows.

1. Can't absorb water.

1) The suction pipe is not installed, the air intake, or the filter screen is blocked.

2) The air in the pump is not discharged. Disconnect the discharge port and let the pump run dry to fully drain the air until the water is evenly discharged.

3) The pump is placed for a long time, and other debris such as rust sticks to the suction valve, and it cannot be opened by the vacuum degree of the pump. Remove the suction valve for cleaning, or use a simpler method: unscrew the suction pipe strainer and poke the wire up from the suction inlet a few times.

2. The pressure can't be beaten.

1) The leakage of the test piece and the connecting pipeline should be eliminated first.

2) Check whether the suction and discharge valves are well sealed, and whether there are debris filled in the meantime.

3) Whether the suction pipe is unblocked and leaking, and whether the filter screen is blocked.

4) Whether there is leakage at each connection and seal, such as O-ring, gasket, plunger seal, etc., will be replaced if it fails.

5) The pressure relief valve is not closed when opened, or the closure is not strict and effective.

6) Whether there is enough water storage in the water tank.

3. The pressure cannot be maintained.

1) The discharge valve line is poorly sealed (the operating handle is raised), and 1000 2000 grinding powder can be used for grinding. If there is no debris to fill it, it can be washed by itself, or removed for cleaning.

2) Whether there is leakage at each connection.

3) If the volume of the test piece is too small (2 liters), it should be equipped with an energy storage container.

The pressure test pump is mainly used as a pressurization equipment used in the pressure test of various pressure vessels and equipment (such as chemical vessels, pump bodies, valves and pipelines, etc.). Therefore, its biggest feature is that the discharge pressure is very high, the general pressure test pump reaches hundreds of atmospheres, the ultra-high pressure pressure test pump reaches tens of thousands of atmospheres, and the flow rate is generally small, most of them are less than 1m3 h. However, the small output flow does not increase the time required for the pressure test, because the pressure test of the container is not completed after the pressure test pump is filled.

Usually, the pressure test process needs to fill the container with liquid first, and then leave a joint to connect with the outlet of the pressure test pump. The principle that the liquid has the equivalent value of the force is transmitted, so that when the outlet of the pressure test pump reaches a certain pressure value, the container is also subjected to this pressure accordingly, so as to achieve the purpose of the test pressure.

The working liquid of the pressure test pump is generally water, but it can also be pure mineral oil. Generally, there are two main types of pressure test pumps: manual and electric.

Due to the high discharge pressure of the pressure test pump, the manual pressure test pump generally belongs to the single-acting piston reciprocating pump, which is mainly composed of the pump body, plunger, hand crank handle and water discharge valve.

The basic structure of an electric pressure test pump is about the same as that of a manual pressure test pump. The pump cylinder consists of 4 single-acting plungers. The transmission part relies on the motor to drive the worm gear and worm deceleration device, and the eccentric wheel on the worm gear shaft pushes the plunger to reciprocate.