Continuous measurement reciprocating piston flowmeter

Abstract

The utility model relates to a continuous measurement reciprocating type piston flowmeter, which comprises a bottom plate, a piston rod and a piston rod, the cylinder bodies are fixed on the bottom plate; piston rods of the cylinders are sealed with the corresponding cylinder bodies through spring plugs; the flow collecting block is fixed on the bottom plate and is arranged at the bottom of the cylinder body; the filling main flow channel is formed in the flow collecting block; one end of each filling branch flow channel is connected with the corresponding cylinder body, and the other end of each filling branch flow channel is connected with the filling main flow channel through the control flow channel; the output main flow channel is formed in the flow collecting block; the output branch runners are formed in the flow collecting blocks, one ends of the output branch runners are connected with the corresponding cylinder bodies, and the other ends of the output branch runners are connected with the output main runner through control runners; the stop valves are arranged at the control flow channels; the device is not affected by medium viscosity and particles, and compared with a rotary piston flowmeter, the device is simple in structure in the mode that a piston is pushed by an air cylinder to fill or output media; the design of the double piston cylinders can be used for continuous measurement and effectively relieving pressure pulsation.

Description

Technical Field

[0001] This utility model relates to flow meters, and in particular to a continuous measuring reciprocating piston flow meter. Background Technology

[0002] Flow meters can be classified into positive displacement flow meters and non-positive displacement flow meters based on their measurement principles. Among them, positive displacement flow meters combine high accuracy and cost-effectiveness. Currently commonly used positive displacement flow meters include gear flow meters and screw flow meters. However, these flow meters are prone to problems such as jamming and reduced measurement accuracy when measuring media containing solid particles or high viscosity.

[0003] In summary, how to achieve continuous flow measurement without being affected by the viscosity and particles of the medium has become an urgent problem for researchers in this field. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to achieve continuous measurement of flow meter without being affected by medium viscosity and particles;

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model relates to a continuous measuring reciprocating piston flow meter, comprising: a base plate; at least one cylinder with a displacement sensor fixed on the base plate; cylinder bodies of the same number as the cylinders fixed on the base plate, wherein the piston rods of the cylinders are sealed to the corresponding cylinder bodies via plugs; a flow collector fixed on the base plate and disposed at the bottom of the cylinder bodies; a main filling channel located at the flow collector; a branch filling channel located at the flow collector, one end of which is connected to the corresponding cylinder body, and the other end of which is connected to the main filling channel via a control channel; a main output channel located at the flow collector; a branch output channel located at the flow collector, one end of which is connected to the corresponding cylinder body, and the other end of which is connected to the main output channel via a control channel; and a shut-off valve disposed at each of the control channels, adapted to control the opening and closing of the control channels.

[0007] Furthermore, the cylinder body is fixed to the top of the manifold by a support base.

[0008] Furthermore, a lubrication assembly for lubricating the piston is provided on the top of the support base.

[0009] Furthermore, the control flow channel includes: a first flow channel and a second flow channel; a groove formed on the outer surface of the flow collector block; and the first flow channel and the second flow channel are both connected to the groove.

[0010] The beneficial effects of this utility model are as follows: This utility model is a reciprocating piston flow meter that can continuously measure; the device is not affected by the viscosity and particles of the medium, and compared with the rotary piston flow meter, the structure is simple because it uses a cylinder to push the piston to fill or output the medium; the double piston cylinder design can be used for continuous measurement and effectively alleviate pressure pulsation. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of the structure of Example 1;

[0013] Figure 2 This is a schematic diagram of the internal structure of Example 1;

[0014] Figure 3 This is a perspective view of the current collector in Example 1;

[0015] Figure 4 This is a structural schematic diagram of Example 2;

[0016] Figure 5 This is a schematic diagram of the internal structure of Example 2;

[0017] Figure 6 This is a perspective view of the current collector in Example 3. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0019] Example 1

[0020] See Figure 1 , 2 This embodiment provides a single-piston cylinder type continuous measurement reciprocating piston flow meter. In this embodiment, the flow meter includes a vertically arranged base plate 1. From top to bottom, the base plate 1 has a cylinder 2 with a displacement sensor, a lubrication assembly 3, a support base 4, and a flow collector 5. The support base 5 contains a cylinder body 6. The end of the piston rod 21 of the cylinder 2 passes through the lubrication assembly 3 and is sealed with the cylinder body 6 by a plug. The front side of the flow collector 5 is provided with a first shut-off valve 7 and a second shut-off valve 8, which are arranged vertically.

[0021] Figure 3This is a perspective view of the manifold 5. One side of the manifold has a main filling channel 51 for filling the medium. The main filling channel 51 is horizontally set and is connected to the filling branch channel 52 through a control channel. The filling branch channel 52 is vertically set and its other end is connected to the bottom of the cylinder 6. The other side of the manifold 5 has an output main channel 53 for outputting the medium. The output main channel 53 is horizontally set and is connected to the output branch channel 54 through a control channel. The output branch channel 54 is vertically set and its other end is connected to the bottom of the cylinder 6.

[0022] The control channel includes a groove 55 formed on the outside of the manifold 5, and a first channel 56 and a second channel 57 arranged horizontally and parallel to each other. One end of the first channel 56 and the second channel 57 is connected to the groove 55, the other end of the first channel 56 is connected to the main filling channel 51 or the main output channel 53, and the other end of the second channel 57 is connected to the branch filling channel 52 or the branch output channel 54. A first shut-off valve 7 and a second shut-off valve 8 are placed at the two grooves 55 respectively. Either shut-off valve can extend its movable end to block the first channel 56 or the second channel 57, so that the medium cannot flow in the control channel.

[0023] In this embodiment, the first shut-off valve 7 is closed and the second shut-off valve 8 is opened. The piston rod 21 of the cylinder 2 moves upward, and the medium enters the cylinder 6 from the main filling channel 51 and the branch filling channel 52 for filling. After filling is completed, the second shut-off valve 8 is closed.

[0024] When the medium needs to be output, the first shut-off valve 7 opens, the second shut-off valve 8 closes, the piston rod 21 of the cylinder 2 moves downward, and the medium is output from the cylinder body 6, the output branch channel 54, and the output main channel 53. After the output is completed, the first shut-off valve 7 closes.

[0025] During the above process, the stroke of cylinder 2 is monitored by a displacement sensor to calculate the medium flow rate and velocity.

[0026] Example 2

[0027] See Figure 4 , 5This embodiment provides a dual-piston cylinder type continuous measurement reciprocating piston flow meter. In this embodiment, the flow meter includes a vertically arranged base plate 1. From top to bottom, the base plate 1 has two cylinders 2 with displacement sensors, a lubrication assembly 3, a support base 4, and a flow collector 5. The two cylinders 2 are arranged on the base plate, with the first cylinder 2A on the left and the second cylinder 2B on the right. The support base 4 has two cylinder bodies 6, with the first cylinder body 6A on the left and the second cylinder body 6B on the right. The piston rod 21 of the corresponding cylinder 2 passes through the lubrication assembly 3 and is sealed with the corresponding cylinder body 6 by a plug. The front side of the flow collector 5 is provided with a first shut-off valve 7, a second shut-off valve 8, a third shut-off valve 9, and a fourth shut-off valve 10, which are arranged in a four-way configuration.

[0028] Figure 6 This is a perspective view of the manifold 5. One side of the manifold has a main filling channel 51 for medium filling. The main filling channel 51 is horizontally set and is connected to two filling branch channels 52 through corresponding control channels. The two filling branch channels 52 are vertically set and their other ends are connected to the bottom of the corresponding cylinder 6. The other side of the manifold 5 has an output main channel 53 for medium output. The output main channel 53 is horizontally set and is connected to two output branch channels 54 through control channels. The two output branch channels 54 are vertically set and their other ends are connected to the bottom of the corresponding cylinder 6.

[0029] The control channel includes a groove 55 on the outside of the manifold, and a first channel 56 and a second channel 57 arranged horizontally and parallel to each other. One end of the first channel 56 and the second channel 57 is connected to the groove 55, and the other end of the first channel is connected to the main filling channel 51 or the main output channel 53. The other end of the second channel 57 is connected to the main filling channel 52 or the main output channel 54. A first shut-off valve 7, a second shut-off valve 8, a third shut-off valve 9, and a fourth shut-off valve 10 are placed at the four grooves 55 respectively. Any shut-off valve can extend its movable end to block the first channel 56 or the second channel 57, so that the medium cannot flow in the control channel.

[0030] In this embodiment, when the first cylinder 6A needs to be filled with medium and the second cylinder 6B needs to output medium, the first shut-off valve 7 is closed, the second shut-off valve 8 is opened, the third shut-off valve 9 is opened, and the fourth shut-off valve 10 is closed. The piston rod 21 of the first cylinder 2A moves upward, and the medium enters the first cylinder 6A from the main filling channel 51 and one of the filling branch channels 52 for filling. At the same time, the piston rod 21 of the second cylinder 2B moves downward, and the medium is output from the second cylinder 6B from one of the output branch channels 54 and the main output channel 53.

[0031] Conversely, when the second cylinder 6B needs to be filled with medium and the first cylinder 6A needs to output medium, the first shut-off valve 7 opens, the second shut-off valve 8 closes, the third shut-off valve 9 closes, and the fourth shut-off valve 10 opens.

[0032] During the above process, the cylinder stroke is monitored by a displacement sensor to calculate the medium flow rate and velocity. The first cylinder and the second cylinder alternately complete the output and filling actions.

[0033] In summary, when the capacity of a single cylinder is greater than the capacity required for a single output, the medium required for the entire output process is provided by a single cylinder 6. That is, the single-piston cylinder continuous measurement reciprocating piston flow meter in Example 1 is used, which does not require switching cylinders and avoids fluctuations in delivery pressure.

[0034] When the capacity of a single cylinder is less than the capacity required for a single output, the medium required for the entire output process is alternately provided by the first cylinder 6A and the second cylinder 6B. That is, the continuous measurement reciprocating piston flow meter of the double piston cylinder type in Example 2 is used to enable continuous discharge of the medium.

[0035] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A continuous measuring reciprocating piston flowmeter characterized by, The application relates to a hydraulic cylinder assembly, comprising: a base plate; at least one cylinder with a displacement sensor fixed on the base plate; a number of cylinder bodies corresponding to the cylinders fixed on the base plate, the piston rod of the cylinder and the corresponding cylinder body being connected through a universal joint seal; a collector fixed on the base plate and arranged at the bottom of the cylinder body; a filling main flow channel arranged at the collector; a filling branch flow channel arranged at the collector, one end of the filling branch flow channel being connected with the corresponding cylinder body and the other end of the filling branch flow channel being connected with the filling main flow channel through a control flow channel; an output main flow channel arranged at the collector; an output branch flow channel arranged at the collector, one end of the output branch flow channel being connected with the corresponding cylinder body and the other end of the output branch flow channel being connected with the output main flow channel through a control flow channel; a stop valve arranged at each control flow channel and adapted to control the opening and closing of the control flow channel.

2. A continuous measuring reciprocating piston flowmeter according to claim 1, characterized in that The cylinder body is fixed on the top of the collector through a support seat.

3. A continuous measuring reciprocating piston flowmeter according to claim 2, characterized in that The top of the support seat is provided with a lubricating assembly for lubricating the piston.

4. A continuous measuring reciprocating piston flowmeter according to claim 1, wherein, The control flow channel comprises a first flow channel and a second flow channel. The outer surface of the collector is inwardly provided with a groove. The first flow channel and the second flow channel are both communicated with the groove.

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