Pressure and flow test bench

Abstract

The utility model discloses a pressure flow testboard, which comprises a cylinder, a buffer tank and a flowmeter, the cylinder, the buffer tank and the flowmeter are transversely and straightly distributed, a delivery pipe is arranged between the buffer tank and the flowmeter, a detection mechanism is arranged on the delivery pipe, and an air inlet pipe is arranged on one end face of the buffer tank facing the cylinder. Shells are installed on the air inlet pipe and a piston rod of the air cylinder, clamping rubber pads are installed on the opposite faces of the shells, air cavities are formed in the clamping rubber pads, vent holes communicated with the air cavities are formed in the opposite faces of the clamping rubber pads, fixing rings are installed on the outer portions of the clamping rubber pads, and sealing sleeves are installed on the outer portions of the fixing rings. According to the utility model, the structure is simple, the two ends of the valve body can be abutted against and sealed through the clamping rubber pads which approach inwards, and the sealing rings with different inner diameters can be replaced according to the diameter of the valve body, so that the sealing performance between the two ends of the valve body and the clamping rubber pads is further improved, and the detection accuracy is prevented from being influenced by air leakage.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure testing, in particular to a pressure flow testing platform. Background Art

[0002] Pressure and flow testing is the process of evaluating and measuring the pressure and flow performance of various types of equipment under specific operating conditions. These devices are widely used in various industries, including but not limited to medical, industrial, construction, and fire protection. These devices, such as hydraulic pumps and valves, have a direct impact on the efficiency and stability of industrial production. Pressure and flow testing helps ensure that these devices are operating properly under rated operating conditions.

[0003] At present, the structure of pressure testing equipment is simple and cannot fully seal the valve body of the equipment, resulting in air leakage during the test, thereby affecting the accuracy of the test. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a pressure flow test bench which can fully seal the valve body to be tested, so as to solve the problems raised in the above background technology.

[0005] The utility model is realized through the following technical scheme: a pressure flow test bench, comprising a cylinder, a buffer tank and a flow meter, wherein the cylinder, buffer tank and flow meter are distributed laterally and straightly, a delivery pipe is installed between the buffer tank and the flow meter, a detection mechanism is installed on the delivery pipe, an air intake pipe is installed on one end surface of the buffer tank facing the cylinder, a shell is installed on the air intake pipe and the piston rod of the cylinder, clamping rubber pads are installed on the opposite surfaces of the shell, an air cavity is formed inside the clamping rubber pads, vents connected to the air cavity are provided on the opposite surfaces of the clamping rubber pads, a fixing ring is installed on the outside of the clamping rubber pads, and a sealing sleeve is installed on the outside of the fixing ring.

[0006] As an optimal technical solution, the detection mechanism includes a high-pressure pressure gauge, a medium-pressure pressure gauge, a micro-pressure pressure gauge, multiple detection tubes and multiple control valves. The detection tubes are all installed on the delivery pipe. The high-pressure pressure gauge, the medium-pressure pressure gauge and the micro-pressure pressure gauge are respectively installed on the end of the detection tube away from the delivery pipe, and the control valves are all installed in the middle of the detection tube.

[0007] As a preferred technical solution, the opposite ends of the sealing sleeve are reduced inward to form a connecting portion of an annular structure, the connecting portion is sleeved on the outside of the clamping rubber pad, the openings of the connecting portion are expanded to form a connecting groove, the connecting groove is sleeved on the outside of the fixing ring, and is threadedly connected to the fixing ring, and a sealing ring is provided inside the sealing sleeve.

[0008] As a preferred technical solution, a plurality of positioning grooves are provided on the inner ring surface of the sealing sleeve, and the outer ring surface of the sealing ring protrudes opposite the positioning grooves to form positioning parts, which are inserted into the corresponding positioning grooves.

[0009] As a preferred technical solution, the shells are connected to the air cavity inside the clamping rubber pad, the shells arranged toward the air intake pipe are provided with an air intake hole connected to the air intake pipe, and the shells arranged toward the cylinder are installed with an air injection pipe.

[0010] As a preferred technical solution, fixed seats are installed on the cylinder, buffer tank and flow meter.

[0011] As a preferred technical solution, a pressure-taking pipe is installed on the buffer tank.

[0012] As a preferred technical solution, a manual stop valve is installed on the air outlet end of the flow meter.

[0013] The beneficial effects of the utility model are as follows: the utility model has a simple structure and is easy to operate. The two ends of the valve body can be pressed against the seal by the clamping rubber pad that moves inward, and the sealing rings with different inner diameters can be replaced according to the diameter of the valve body, thereby further increasing the sealing between the two ends of the valve body and the clamping rubber pad, avoiding the influence of air leakage on the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a side view of the utility model;

[0017] Figure 3 This is a schematic structural diagram of the housing and the clamping rubber pad in the utility model;

[0018] Figure 4 It is a structural schematic diagram of the sealing sleeve in the utility model.

[0019] Among them, 1. Cylinder; 2. Buffer tank; 3. Delivery pipe; 4. Flow meter; 5. Manual stop valve; 6. Detection tube; 7. High-pressure pressure gauge; 8. Medium-pressure pressure gauge; 9. Micro-pressure pressure gauge; 10. Inlet pipe; 11. Shell; 12. Clamping rubber pad; 13. Vent; 14. Sealing sleeve; 15. Connecting part; 16. Gas injection pipe; 17. Pressure taking pipe; 18. Sealing ring; 19. Fixing seat; 20. Positioning part; 21. Fixing ring; 22. Connecting groove. DETAILED DESCRIPTION

[0020] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0021] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0022] Any feature disclosed in this specification (including any appended claims, abstract, and drawings), unless otherwise stated, may be replaced by other equivalent or similar features. In other words, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0023] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, a pressure flow test bench of the utility model includes a cylinder 1, a buffer tank 2 and a flow meter 4, wherein the cylinder 1, the buffer tank 2 and the flow meter 4 are distributed laterally and straightly, a delivery pipe 3 is installed between the buffer tank 2 and the flow meter 4, a detection mechanism is installed on the delivery pipe 3, an air intake pipe 10 is installed on one end face of the buffer tank 2 facing the cylinder 1, a shell 11 is installed on the air intake pipe 10 and the piston rod of the cylinder 1, a clamping rubber pad 12 is installed on the opposite surface of the shell 11, an air cavity is formed inside the clamping rubber pad 12, an air vent 13 connected to the air cavity is provided on the opposite surface of the clamping rubber pad 12, a fixing ring 21 is installed on the outside of the clamping rubber pad 12, and a sealing sleeve 14 is installed on the outside of the fixing ring 21.

[0024] In this embodiment, the detection mechanism includes a high-pressure pressure gauge 7, a medium-pressure pressure gauge 8, a micro-pressure pressure gauge 9, multiple detection tubes 6 and multiple control valves. The detection tubes 6 are all installed on the delivery pipe 3. The high-pressure pressure gauge 7, the medium-pressure pressure gauge 8 and the micro-pressure pressure gauge 9 are respectively installed on the end of the detection tube 6 away from the delivery pipe 3, and the control valves are all installed in the middle of the detection tube 6.

[0025] In this embodiment, the opposite ends of the sealing sleeves 14 are inwardly narrowed to form an annular connecting portion 15. The connecting portions 15 are sleeved on the outside of the clamping rubber pad 12. The openings of the connecting portions 15 are enlarged to form connecting grooves 22. The connecting grooves 22 are sleeved on the outside of the fixing ring 21 and are threadedly connected to the fixing ring 21. A sealing ring 18 is provided inside the sealing sleeves 14.

[0026] The inner ring surface of the connecting portion is arranged to abut against the outer ring surface of the clamping rubber pad, and the connecting groove is convenient for disassembly and assembly of the sealing sleeve by being threadedly connected to the fixing ring.

[0027] In this embodiment, a plurality of positioning grooves are provided on the inner ring surface of the sealing sleeve 14, and the outer ring surface of the sealing ring 18 protrudes opposite the positioning grooves to form positioning portions 20. The positioning portions 20 are inserted into the corresponding positioning grooves, thereby increasing the contact area with the sealing sleeve. The sealing ring can be positioned circumferentially through the positioning portions, thereby increasing stability after installation.

[0028] In this embodiment, the shell 11 is connected to the air cavity inside the clamping rubber pad 12. The shell 11 arranged toward the intake pipe 10 is provided with an intake hole connected to the intake pipe 10. The shell 11 arranged toward the cylinder 1 is installed with an injection pipe 16. A valve can be installed on the injection pipe so that after the compressed gas injection is completed, the valve can be closed to prevent the entry of external gas.

[0029] In this embodiment, a fixing seat 19 is installed on the cylinder 1 , the buffer tank 2 and the flow meter 4 .

[0030] In this embodiment, a pressure-taking pipe 17 is installed on the buffer tank 2 ; and a manual stop valve 5 is installed on the gas outlet end of the flow meter 4 .

[0031] When in use, the spring to be tested is set between the clamping rubber pads, and the sealing rings with different inner rings are replaced according to the diameter of the valve body. After confirmation, the sealing ring is placed in the sealing sleeve, and the positioning part on the sealing ring is inserted into the positioning groove. The clamping rubber pad is driven inward by the cylinder until the end face of the valve body is against the clamping rubber pad and connected to the vent hole, while the outer ring surface of the valve body is in contact with the inner ring surface of the sealing ring, so as to increase the sealing between the clamping rubber pad and the valve body, avoid air leakage, and ensure the accuracy of the test;

[0032] Then connect compressed air to the air injection pipe. The compressed air can be discharged from the vent along the shell and air cavity on one side. The discharged compressed air can pass through the valve body and enter the air inlet pipe through the vent, air cavity and shell on the other side, until it enters the delivery pipe through the buffer tank. The valve body leakage can be tested in one clamping. Open the control valve corresponding to the pressure gauge, and the pressure behind the valve can be read on the pressure gauge. At the same time, the air flow rate is displayed on the flow meter. The manual shut-off valve controls the consumption analog value behind the valve.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that do not require creative effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. A pressure flow test bench, characterized by: The invention comprises a cylinder (1), a buffer tank (2) and a flow meter (4), wherein the cylinder (1), the buffer tank (2) and the flow meter (4) are arranged in a straight line in the transverse direction, a delivery pipe (3) is installed between the buffer tank (2) and the flow meter (4), a detection mechanism is installed on the delivery pipe (3), an air intake pipe (10) is installed on one end surface of the buffer tank (2) facing the cylinder (1), a housing (11) is installed on the air intake pipe (10) and the piston rod of the cylinder (1), a clamping rubber pad (12) is installed on the opposite surface of the housing (11), an air cavity is formed inside the clamping rubber pad (12), a vent (13) connected to the air cavity is provided on the opposite surface of the clamping rubber pad (12), a fixing ring (21) is installed on the outside of the clamping rubber pad (12), and a sealing sleeve (14) is installed on the outside of the fixing ring (21).

2. The pressure flow test bench according to claim 1, characterized in that: The detection mechanism comprises a high-pressure pressure gauge (7), a medium-pressure pressure gauge (8), a micro-pressure pressure gauge (9), a plurality of detection tubes (6) and a plurality of control valves. The detection tubes (6) are all installed on the delivery tube (3). The high-pressure pressure gauge (7), the medium-pressure pressure gauge (8) and the micro-pressure pressure gauge (9) are respectively installed on one end of the detection tube (6) away from the delivery tube (3). The control valves are all installed in the middle of the detection tube (6).

3. The pressure and flow test bench according to claim 1, characterized in that: The opposite ends of the sealing sleeves (14) are inwardly contracted to form a connecting portion (15) of an annular structure. The connecting portion (15) is sleeved on the outside of the clamping rubber pad (12). The openings of the connecting portions (15) are enlarged to form connecting grooves (22). The connecting grooves (22) are sleeved on the outside of the fixing ring (21) and are threadedly connected to the fixing ring (21). A sealing ring (18) is provided inside the sealing sleeves (14).

4. The pressure and flow test bench according to claim 3, characterized in that: The inner ring surface of the sealing sleeve (14) is provided with a plurality of positioning grooves, and the outer ring surface of the sealing ring (18) is protruded at positions corresponding to the positioning grooves to form positioning parts (20), and the positioning parts (20) are inserted into the corresponding positioning grooves.

5. The pressure and flow test bench according to claim 1, characterized in that: The shell (11) is connected to the air cavity inside the clamping rubber pad (12), the shell (11) arranged toward the air intake pipe (10) is provided with an air intake hole connected to the air intake pipe (10), and the shell (11) arranged toward the cylinder (1) is installed with an air injection pipe (16).

6. The pressure and flow test bench according to claim 1, characterized in that: A fixing seat (19) is installed on the cylinder (1), the buffer tank (2) and the flow meter (4).

7. The pressure and flow test bench according to claim 1, characterized in that: A pressure-taking pipe (17) is installed on the buffer tank (2).

8. The pressure and flow test bench according to claim 1, characterized in that: A manual stop valve (5) is installed on the gas outlet end of the flow meter (4).

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