A device for accurately measuring the dynamic pressure of a plunger pump

Abstract

The utility model relates to the technical field of plunger pumps, and discloses a dynamic pressure device for accurately measuring a plunger pump, including a cylinder and a pipeline, one side of the cylinder and the pipeline are fixedly connected with a flange, one side of the outer wall of the flange penetrates and is slidably connected with a uniformly distributed threaded cylinder, the inner wall of the threaded cylinder is provided with a mounting assembly, the other side of the inner wall of the cylinder is fixedly connected with a first fixed frame, one side of the first fixed frame is fixedly connected with a second fixed frame, and a diaphragm is provided between the first fixed frame and the second fixed frame. In the utility model, firstly, liquid passes through the through hole on the first fixed frame to squeeze the diaphragm, thereby squeezing the gas on the other side of the diaphragm, and the pressure is detected by a pressure sensor, and the water inlet pipe and the water outlet pipe are connected to the thermostat to control the temperature of the temperature control shell to avoid changes in the gas temperature and affect the detection result of the pressure sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger pumps, in particular to a dynamic pressure device for accurately measuring a plunger pump. Background Art

[0002] The plunger pump is an important device in the hydraulic system. It relies on the reciprocating motion of the plunger in the cylinder to change the volume of the sealed working chamber to achieve oil suction and oil pressure. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow regulation. The plunger pump is widely used in high pressure, large flow and flow regulation occasions, such as hydraulic presses, engineering machinery and ships.

[0003] While high-precision sensors can capture rapidly changing pressures, under extremely dynamic conditions, some sensors may not be able to keep up with the speed of pressure fluctuations, resulting in inaccurate data, and temperature may have an impact on sensor performance.

[0004] In view of the above problems, a device for accurately measuring the dynamic pressure of a plunger pump is proposed. Utility Model Content

[0005] The utility model aims to provide a device for accurately measuring the dynamic pressure of a plunger pump, which solves the problem in the background technology that the temperature affects the sensor and the sensor cannot keep up with the speed of pressure fluctuation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for accurately measuring the dynamic pressure of a plunger pump, comprising a cylinder and a pipeline, one side of the cylinder and the pipeline are fixedly connected with a flange, the outer wall of one side of the flange passes through and is slidably connected with a uniformly distributed threaded barrel, the inner wall of the threaded barrel is provided with a mounting assembly, the other side of the inner wall of the cylinder is fixedly connected with a first fixed frame, one side of the first fixed frame is fixedly connected with a second fixed frame, a diaphragm is provided between the first fixed frame and the second fixed frame, the outer wall of the second fixed frame is fixedly connected with a temperature control shell, the middle of the outer wall of the second fixed frame is passed through and fixedly connected with a cylinder, and the top of the cylinder is passed through and fixedly connected with a pressure sensor.

[0007] By adopting the above technical solution, the practical diaphragm has good toughness and will not be damaged due to extrusion.

[0008] As a further description of the above technical solution: the installation assembly includes a bolt, which is threadedly connected to the inner wall of the threaded barrel, and one side of the outer circle of the bolt is provided with evenly distributed limiting grooves, and the inner walls of the limiting grooves are provided with balls.

[0009] By adopting the above technical solution, the ball bearings can be squeezed by bolts, so that the mounting assembly and the flange can be spliced.

[0010] As a further description of the above technical solution: one side of the outer wall of the threaded barrel is provided with evenly distributed limiting holes, and the limiting holes are slidably connected to the ball bearings, and the other side of the outer wall of the threaded barrel is penetrated and provided with evenly distributed sealing rings.

[0011] By adopting the above technical solution, the ball can be prevented from slipping out through the limiting hole, and the friction force can be increased through the sealing ring to prevent unstable connection.

[0012] As a further description of the above technical solution: a sealing gasket is fixedly connected to one side of the flange, and the sealing gasket penetrates and is slidably connected to the threaded barrel.

[0013] By adopting the above technical solution, the sealing performance of the connection can be increased through the sealing gasket.

[0014] As a further description of the above technical solution: the other side of the first fixing frame is provided with evenly distributed through holes.

[0015] By adopting the above technical solution, the liquid can be brought into contact with the diaphragm through the through hole.

[0016] As a further description of the above technical solution: a water inlet pipe penetrates and is fixedly connected to one side of the top of the temperature-control shell, and a water outlet pipe penetrates and is fixedly connected to the other side of the top of the temperature-control shell.

[0017] By adopting the above technical solution, the temperature-controlled shell can prevent gas from being squeezed or liquid temperature from being too high and changing.

[0018] As a further description of the above technical solution: an air intake pipe is passed through and fixedly connected to one side of the outer wall of the cylinder, and a sealing cover is threadedly connected to the inner wall of the air intake pipe.

[0019] By adopting the above technical solution, the gas in the cylinder can be replaced or increased or decreased through the intake pipe and the sealing cover.

[0020] As a further description of the above technical solution: a transmission pipe passes through and is fixedly connected between the cylinder and the pipeline, and the transmission pipe passes through and is fixedly connected to the first fixing frame.

[0021] By adopting the above technical solution, liquid can be transmitted through the transmission pipe.

[0022] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0023] 1. The utility model provides a device for accurately measuring the dynamic pressure of a plunger pump. First, liquid passes through the through hole on the first fixed frame to squeeze the diaphragm, thereby squeezing the gas on the other side of the diaphragm. The pressure is detected by a pressure sensor, and the temperature of the temperature control shell is controlled by connecting the water inlet pipe and the water outlet pipe to the constant temperature device to avoid changes in the gas temperature and affecting the detection result of the pressure sensor.

[0024] 2. The utility model provides a device for accurately measuring the dynamic pressure of a plunger pump. Through the bolts, balls, limit holes, threaded cylinders, sealing rings and flanges in the installation assembly, the device can be quickly connected to the liquid outlet of the plunger pump, and it is also convenient to connect the device to other pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of the utility model;

[0026] Figure 2 It is a three-dimensional diagram of the utility model;

[0027] Figure 3 It is a schematic diagram of the diaphragm of the utility model;

[0028] Figure 4 It is a schematic diagram of the installation assembly of the utility model.

[0029] Legend:

[0030] 1. Cylinder body; 2. Flange; 3. Sealing gasket; 4. Threaded cylinder; 5. Temperature control shell; 6. Water inlet pipe; 7. Cylinder; 8. Pressure sensor; 9. Air inlet pipe; 10. Transmission pipe; 11. Pipeline; 12. Water outlet pipe; 13. Sealing cover; 14. First fixing frame; 15. Through hole; 16. Diaphragm; 17. Second fixing frame; 18. Limiting hole; 19. Sealing ring; 20. Ball; 21. Limiting groove; 22. Bolt. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0033] Combination Figure 1The utility model is a device for accurately measuring the dynamic pressure of a plunger pump, comprising a cylinder 1 and a pipeline 11, one side of the cylinder 1 and the pipeline 11 are fixedly connected with a flange 2, one side of the outer wall of the flange 2 is penetrated and slidably connected with a uniformly distributed threaded cylinder 4, the inner wall of the threaded cylinder 4 is provided with a mounting assembly, one side of the flange 2 is fixedly connected with a sealing gasket 3, and the sealing gasket 3 and the threaded cylinder 4 are penetrated and slidably connected;

[0034] The pipeline 11, the transmission tube 10 and the cylinder 1 facilitate the transmission of the liquid after the detection.

[0035] Combination Figure 2 and Figure 3 A first fixed frame 14 is fixedly connected to the other side of the inner wall of the cylinder 1, a second fixed frame 17 is fixedly connected to one side of the first fixed frame 14, a diaphragm 16 is arranged between the first fixed frame 14 and the second fixed frame 17, a temperature control shell 5 is fixedly connected to the outer wall of the second fixed frame 17, a cylinder 7 is passed through and fixedly connected to the middle of the outer wall of the second fixed frame 17, a pressure sensor 8 is passed through and fixedly connected to the top of the cylinder 7, a water inlet pipe 6 is passed through and fixedly connected to one side of the top of the temperature control shell 5, a water outlet pipe 12 is passed through and fixedly connected to the other side of the top of the temperature control shell 5, an air inlet pipe 9 is passed through and fixedly connected to one side of the outer wall of the cylinder 7, a sealing cover 13 is threadedly connected to the inner wall of the air inlet pipe 9, a transmission pipe 10 is passed through and fixedly connected between the cylinder 1 and the pipeline 11, and the transmission pipe 10 is passed through and fixedly connected to the first fixed frame 14, and a uniformly distributed through-hole 15 is opened on the other side of the first fixed frame 14;

[0036] The plunger pump pumps out the liquid, and the liquid passes through the through hole 15 on the first fixed frame 14 to squeeze the diaphragm 16, thereby squeezing the gas on the other side of the diaphragm 16, and the pressure is detected by the pressure sensor 8. When the diaphragm 16 is squeezed to a certain position, the liquid enters the pipeline 11 from the transmission pipe 10, and is connected to the constant temperature device through the water inlet pipe 6 and the water outlet pipe 12 to avoid changes in gas temperature and affect the detection results of the pressure sensor 8.

[0037] Combination Figure 4 The mounting assembly includes a bolt 22, which is threadedly connected to the inner wall of the threaded tube 4. One side of the outer ring of the bolt 22 is provided with uniformly distributed limiting grooves 21, and the inner walls of the limiting grooves 21 are provided with balls 20. One side of the outer wall of the threaded tube 4 is provided with uniformly distributed limiting holes 18, and the limiting holes 18 are slidably connected to the balls 20. The other side of the outer wall of the threaded tube 4 is penetrated and provided with uniformly distributed sealing rings 19;

[0038] By installing the bolts 22, balls 20, limit holes 18, threaded tubes 4, sealing rings 19 and flanges 2 in the assembly, the device can be quickly connected to the liquid outlet of the plunger pump, and it is also convenient for the device to be connected to other pipelines.

[0039] Working principle: When in use, the flange 2 and the sealing gasket 3 are connected to the liquid outlet of the plunger pump, and the installation component is connected to the liquid outlet flange 2 of the plunger pump, and the bolt 22 is turned. The bolt 22 moves to one side, driving the ball 20 to move upward, so that the ball 20 is pushed out from the limiting hole 18, and the ball 20 contacts one side of the liquid outlet flange 2 of the plunger pump. The sealing ring 19 is used to prevent the installation component from moving. The plunger pump pumps out the liquid, and the liquid passes through the through hole 15 on the first fixed frame 14 to squeeze the diaphragm 16, thereby squeezing the gas on the other side of the diaphragm 16, and the pressure is detected by the pressure sensor 8. When the diaphragm 16 is squeezed to a certain position, the liquid enters the pipeline 11 from the transmission pipe 10, and is connected to the constant temperature device through the water inlet pipe 6 and the water outlet pipe 12 to avoid changes in gas temperature and affect the detection result of the pressure sensor 8.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for accurately measuring the dynamic pressure of a plunger pump, comprising a cylinder (1) and a pipeline (11), characterized in that: The barrel (1) and the pipe (11) are both fixedly connected to a flange (2) on one side, and a uniformly distributed threaded barrel (4) is penetrated and slidably connected to the outer wall of one side of the flange (2), and a mounting assembly is provided on the inner wall of the threaded barrel (4), and a first fixing frame (14) is fixedly connected to the other side of the inner wall of the barrel (1), and a second fixing frame (17) is fixedly connected to one side of the first fixing frame (14), and a diaphragm (16) is provided between the first fixing frame (14) and the second fixing frame (17), and a temperature control shell (5) is fixedly connected to the outer wall of the second fixing frame (17), and a cylinder (7) is penetrated and fixedly connected to the middle of the outer wall of the second fixing frame (17), and a pressure sensor (8) is penetrated and fixedly connected to the top of the cylinder (7).

2. A device for accurately measuring the dynamic pressure of a plunger pump according to claim 1, characterized in that: The mounting assembly comprises a bolt (22) which is threadedly connected to the inner wall of the threaded barrel (4); one side of the outer ring of the bolt (22) is provided with evenly distributed limiting grooves (21); and the inner walls of the limiting grooves (21) are provided with balls (20).

3. A device for accurately measuring the dynamic pressure of a plunger pump according to claim 1, characterized in that: One side of the outer wall of the threaded barrel (4) is provided with evenly distributed limiting holes (18), and the limiting holes (18) are slidably connected to the balls (20), and the other side of the outer wall of the threaded barrel (4) is penetrated and provided with evenly distributed sealing rings (19).

4. A device for accurately measuring the dynamic pressure of a plunger pump according to claim 1, characterized in that: A sealing gasket (3) is fixedly connected to one side of the flange (2), and the sealing gasket (3) penetrates and is slidably connected to the threaded tube (4).

5. The device for accurately measuring the dynamic pressure of a plunger pump according to claim 1, characterized in that: The other side of the first fixing frame (14) is provided with evenly distributed through holes (15).

6. A device for accurately measuring the dynamic pressure of a plunger pump according to claim 1, characterized in that: A water inlet pipe (6) penetrates and is fixedly connected to one side of the top of the temperature control shell (5), and a water outlet pipe (12) penetrates and is fixedly connected to the other side of the top of the temperature control shell (5).

7. A device for accurately measuring the dynamic pressure of a plunger pump according to claim 1, characterized in that: An air intake pipe (9) penetrates and is fixedly connected to one side of the outer wall of the cylinder (7), and a sealing cover (13) is threadedly connected to the inner wall of the air intake pipe (9).

8. The device for accurately measuring the dynamic pressure of a plunger pump according to claim 1, characterized in that: A transmission pipe (10) passes through and is fixedly connected between the cylinder (1) and the pipeline (11), and the transmission pipe (10) passes through and is fixedly connected to the first fixing frame (14).

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