Servo hydraulic system with adjustable opening degree of oil inlet

Abstract

The utility model provides a servo hydraulic system with adjustable oil inlet opening, which comprises a pipeline pressure testing machine main body, an electric valve, a manual valve and a sealing ring, and a box body for storing hydraulic oil is arranged at the rear lower end of the internal composition of the pipeline pressure testing machine main body. Compared with the prior art, the pipeline pressure testing machine has the following beneficial effects that the pipeline pressure testing machine main body, the electric valve and the manual valve are additionally arranged, and the electric valve and the manual valve are fixedly mounted and respectively arranged above the two groups of slow-release seats, so that the slow-release clamping plate clamps the electric valve and the manual valve, and the shaking of the electric valve and the manual valve is transmitted to the damping shock absorber through the slow-release clamping plate; by additionally arranging the pipeline pressure testing machine body, the electric valve, the manual valve, the filter plate and the sealing ring, the filter plate and the sealing ring are installed between the first flange plate and the second flange plate at the rear end, and the effect of adjusting the opening degree of the oil inlet can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of servo hydraulic systems of pipeline pressure testing machines, and particularly relates to a servo hydraulic system with adjustable oil inlet opening. Background Art

[0002] The pipeline pressure tester is a device specially used to test pressure pipes, pressure joints and pressure test combinations to ensure the pressure bearing performance and sealing of the pipeline system. The pipeline pressure tester oil port opening adjusts the amount of oil passing through the oil port, thereby controlling the speed, force or system pressure of the actuator to meet the needs under different working conditions. The larger the opening, the more oil flows through, the faster the system responds or the greater the torque of the actuator; conversely, the flow rate slows down or the torque decreases. However, most of the common pipeline pressure testers do not have corresponding slow-release structures for the oil inlet opening adjustment components. There will be a certain amount of shaking during the operation of the pipeline pressure tester, which will cause the oil inlet opening adjustment components to shake, causing fluctuations in the oil inlet opening adjustment during use, making the oil inlet opening adjustment lack of accuracy.

[0003] Secondly, the continuous shaking of the oil inlet opening adjustment component will reduce the sealing of the connection part, which may cause leakage and also cause problems in the oil inlet opening adjustment.

[0004] In summary, the shaking of the oil inlet opening adjustment component of the pipeline pressure testing machine servo hydraulic system will affect the oil inlet opening adjustment, so it is hoped to propose a new structure to solve the above technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a servo hydraulic system with an adjustable oil inlet opening, so as to solve the problems raised in the above-mentioned background technology.

[0006] The utility model is realized through the following technical scheme: a servo hydraulic system with adjustable oil inlet opening, comprising: a pipeline pressure testing machine body, an electric valve, a manual valve and a sealing ring, wherein the rear lower end of the internal composition of the pipeline pressure testing machine body is provided with a box for storing hydraulic oil, the front upper end of the box is provided with a bearing plate for bearing the electric valve and the manual valve, the upper surface of the bearing plate is provided with two groups of slow-release seats for shaking and slow-releasing the electric valve and the manual valve, an electric valve for adjusting the oil inlet opening is provided above the slow-release seat at the rear end, a manual valve for adjusting the oil inlet opening is provided above the slow-release seat at the front end, two flanges for easy connection are provided at the front and rear ends of the electric valve and the manual valve, two sealing ring grooves for improving the sealing effect are provided on the outer side of the two flanges, a sealing ring groove for improving the sealing effect is provided on the inner side of the two sealing ring grooves, and a filter plate for filtering the hydraulic oil is provided on the inner side of the sealing ring.

[0007] As a preferred embodiment, a slow-release groove is provided on the upper surface of the slow-release seat, and slow-release sliding grooves for assisting the linear movement of the slow-release splint are provided on the inner side surfaces at both ends of the slow-release groove.

[0008] As a preferred embodiment, a slow-release clamp for clamping the electric valve and the manual valve is provided on the inner side of the slow-release groove, and a slow-release slider is provided on the lower end of the slow-release clamp. The slow-release slider and the slow-release groove are movably engaged with each other. By sliding the slow-release slider on the inner side of the slow-release groove, the slow-release clamp can be assisted in linear movement to clamp the electric valve and the manual valve.

[0009] As a preferred embodiment, a damping shock absorber for slowly releasing and adjusting the shaking is provided at one end of the slow-release splint away from the center of the slow-release seat. The damping shock absorber can slowly release the shaking generated by the electric valve and the manual valve and reduce the degree of shaking.

[0010] As a preferred embodiment, a pressure measuring body for pipeline pressure testing is provided above the box body, an oil inlet pipe end is provided on the front side of the pressure measuring body, an oil inlet pipe start is provided at the lower front end of the box body, and a flange is provided on the front side of the oil inlet pipe end and the rear side of the oil inlet pipe start.

[0011] As a preferred embodiment, a sealing ring groove 1 for improving the sealing effect is opened on the periphery of the front side surface of the flange plate 1 at the rear end, and the front and rear ends of the sealing ring are respectively interlocked with the sealing ring groove 1 and the sealing ring groove 2, and the two ends of the sealing ring are respectively embedded in the inner sides of the sealing ring groove 1 and the sealing ring groove 2, so that the sealing ring is squeezed when the flange plate 1 and the flange plate 2 are spliced, which can improve the sealing performance.

[0012] As a preferred embodiment, a circular groove for engaging the filter plate is formed on the inner periphery of the front side surface of the flange 1 at the rear end, the filter plate and the circular groove are interlocked, and the flange 1 and the flange 2 are fixed by bolts.

[0013] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: by adding a pipeline pressure test machine body, an electric valve and a manual valve, the electric valve and the manual valve are installed and fixed and placed respectively above two groups of slow-release seats, so that the slow-release clamp clamps the electric valve and the manual valve, and the shaking of the electric valve and the manual valve is transmitted to the damping shock absorber through the slow-release clamp to slow-release the shaking, thereby reducing the shaking of the electric valve and the manual valve during use; by adding a pipeline pressure test machine body, an electric valve, a manual valve, a filter plate and a sealing ring, the filter plate and the sealing ring are installed between the rear end flange one and the flange two, thereby improving the effect of adjusting the oil inlet opening. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 1 The utility model is a schematic diagram of the overall structure of a servo hydraulic system with adjustable oil inlet opening.

[0016] Figure 2 The utility model is a structural schematic diagram of a servo hydraulic system with adjustable oil inlet opening without a pipeline pressure testing machine body.

[0017] Figure 3 It is a structural schematic diagram of the rear side of a pipeline pressure testing machine body in a servo hydraulic system with adjustable oil inlet opening according to the utility model.

[0018] Figure 4 It is a structural schematic diagram of the front side of a pipeline pressure testing machine main body in a servo hydraulic system with adjustable oil inlet opening according to the utility model.

[0019] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0020] Figure 6 The utility model is a structural schematic diagram of an electric valve in a servo hydraulic system with adjustable oil inlet opening.

[0021] In the figure, 100-pipeline pressure test machine body, 101-box, 102-bearing plate, 103-start of oil inlet pipe, 104-end of oil inlet pipe, 105-flange plate 1, 106-sealing ring groove 1, 107-circular groove, 108-slow-release seat, 109-damping shock absorber, 110-slow-release slide groove, 111-slow-release clamping plate;

[0022] 200-electric valve, 201-flange plate 2, 202-sealing ring groove 2;

[0023] 300-manual valve;

[0024] 400-filter plate;

[0025] 500-Seal ring. DETAILED DESCRIPTION

[0026] 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 of 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.

[0027] See also Figures 1 to 6 The utility model provides a technical solution: a servo hydraulic system with adjustable oil inlet opening, comprising: a pipeline pressure test machine body 100, an electric valve 200, a manual valve 300 and a sealing ring 500, wherein the rear lower end of the pipeline pressure test machine body 100 is provided with a box 101 for storing hydraulic oil;

[0028] A bearing plate 102 for bearing the electric valve 200 and the manual valve 300 is provided at the upper front end of the box body 101. Two sets of slow-release seats 108 for shaking and slow-releasing the electric valve 200 and the manual valve 300 are provided on the upper surface of the bearing plate 102. An electric valve 200 for adjusting the opening of the oil inlet is provided above the slow-release seat 108 at the rear end.

[0029] A manual valve 300 for adjusting the opening of the oil inlet is provided above the front end slow-release seat 108. Flange plates 201 for easy connection are provided at both the front and rear ends of the electric valve 200 and the manual valve 300. A sealing ring groove 202 for improving the sealing effect is provided on the outer side of the flange plate 201. A sealing ring 500 for improving the sealing effect is provided on the inner side of the sealing ring groove 202. A filter plate 400 for filtering the hydraulic oil is provided on the inner side of the sealing ring 500.

[0030] A slow-release groove is formed on the upper surface of the slow-release seat 108 , and slow-release sliding grooves 110 for assisting the slow-release clamping plate 111 in linear movement are formed on the inner side surfaces at both ends of the slow-release groove.

[0031] A slow-release clamp 111 for clamping the electric valve 200 and the manual valve 300 is provided on the inner side of the slow-release groove, and a slow-release slider is provided at the lower end of the slow-release clamp 111. The slow-release slider and the slow-release groove 110 are movably engaged with each other. By sliding the slow-release slider on the inside of the slow-release groove 110, the slow-release clamp 111 can be assisted to move linearly to clamp the electric valve 200 and the manual valve 300.

[0032] A damping shock absorber 109 for regulating the shaking is provided at one end of the slow-release clamping plate 111 away from the center of the slow-release seat 108. The damping shock absorber 109 can slowly release the shaking generated by the electric valve 200 and the manual valve 300 and reduce the degree of shaking.

[0033] See also Figure 1-Figure 5As the first embodiment of the utility model: first, the user installs and fixes the electric valve 200 and the manual valve 300 and places them above the two sets of slow-release seats 108 respectively, and pulls the slow-release clamp 111 to clamp the electric valve 200 and the manual valve 300. Secondly, vibration will be generated during the operation of the pipeline pressure testing machine body 100, and the electric valve 200 and the manual valve 300 will shake accordingly, and then the shaking will be transmitted to the damping shock absorber 109 through the slow-release clamp 111, so that the shaking can be slow-released, thereby reducing the shaking of the electric valve 200 and the manual valve 300 during use.

[0034] A pressure measuring body for pipeline pressure testing is provided above the box body 101, an oil inlet pipe end 104 is provided on the front side of the pressure measuring body, an oil inlet pipe start 103 is provided on the front lower end of the box body 101, and a flange 105 is provided on the front side of the oil inlet pipe end 104 and the rear side of the oil inlet pipe start 103.

[0035] A sealing ring groove 106 for improving the sealing effect is opened on the periphery of the front side surface of the rear end flange 105, and the front and rear ends of the sealing ring 500 are respectively interlocked with the sealing ring groove 106 and the sealing ring groove 202. The two ends of the sealing ring 500 are respectively embedded in the inner sides of the sealing ring groove 106 and the sealing ring groove 202, so that the sealing ring 500 is squeezed when the flange 105 and the flange 201 are spliced, which can improve the sealing performance.

[0036] A circular groove 107 for engaging the filter plate 400 is formed on the inner periphery of the front side of the rear end flange 105. The filter plate 400 and the circular groove 107 are interlocked with each other. The flange 105 and the flange 201 are fixed by bolts.

[0037] See also Figure 1 - and 6, as the second embodiment of the utility model: based on the above-mentioned first embodiment, firstly, the two ends of the sealing ring 500 are respectively embedded in the inner sides of the sealing ring groove 1 106 and the sealing ring groove 2 202, and a group of filter plates 400 are embedded in the inner side of the circular groove 107 opened on the front side of the rear end flange 105, so that the sealing ring 500 and the filter plate 400 are squeezed when the flange 105 and the flange 201 are spliced, which can improve the sealing performance and realize the filtering function. Secondly, during use, the oil inlet opening is adjusted by independently controlling the electric valve 200 and the manual valve 300, thereby improving the accuracy of the oil inlet opening adjustment.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 servo hydraulic system with adjustable oil inlet opening, comprising: A pipeline pressure testing machine body (100), an electric valve (200), a manual valve (300) and a sealing ring (500), characterized in that: the pipeline pressure testing machine body (100) is provided with a box (101) for storing hydraulic oil at the rear lower end of its internal components; A bearing plate (102) for bearing the electric valve (200) and the manual valve (300) is provided at the upper front end of the box body (101); two groups of slow-release seats (108) for shaking and slow-releasing the electric valve (200) and the manual valve (300) are provided on the upper surface of the bearing plate (102); and an electric valve (200) for adjusting the opening of the oil inlet is provided above the slow-release seat (108) at the rear end; A manual valve (300) for adjusting the opening of the oil inlet is provided above the slow-release seat (108) at the front end. The electric valve (200) and the manual valve (300) are provided with flange plates (201) at both the front and rear ends for easy connection. A sealing ring groove (202) for improving the sealing effect is provided on the outer side of the flange plate (201). A sealing ring (500) for improving the sealing effect is provided on the inner side of the sealing ring groove (202). A filter plate (400) for filtering hydraulic oil is provided on the inner side of the sealing ring (500).

2. A servo hydraulic system with adjustable oil inlet opening as claimed in claim 1, characterized in that: A slow-release groove is provided on the upper surface of the slow-release seat (108), and slow-release sliding grooves (110) for assisting the slow-release clamping plate (111) in linear movement are provided on the inner side surfaces at both ends of the slow-release groove.

3. A servo hydraulic system with adjustable oil inlet opening as claimed in claim 2, characterized in that: A slow-release clamp (111) for clamping the electric valve (200) and the manual valve (300) is provided on the inner side of the slow-release groove, and a slow-release slider is provided at the lower end of the slow-release clamp (111), and the slow-release slider is movably engaged with the slow-release slide groove (110).

4. A servo hydraulic system with adjustable oil inlet opening as claimed in claim 3, characterized in that: A damping shock absorber (109) for performing a slow-release adjustment on shaking is provided at one end of the slow-release clamping plate (111) away from the center of the slow-release seat (108).

5. A servo hydraulic system with adjustable oil inlet opening as claimed in claim 1, characterized in that: A pressure measuring body for conducting pipeline pressure testing is provided above the box body (101), an oil inlet pipe end (104) is provided at the front side of the pressure measuring body, an oil inlet pipe start (103) is provided at the lower front end of the box body (101), and a flange plate 1 (105) is provided at the front side of the oil inlet pipe end (104) and the rear side of the oil inlet pipe start (103).

6. A servo hydraulic system with adjustable oil inlet opening as claimed in claim 5, characterized in that: A sealing ring groove 1 (106) for improving the sealing effect is provided on the periphery of the front side surface of the flange plate 1 (105) at the rear end, and the front and rear ends of the sealing ring (500) are respectively interlocked with the sealing ring groove 1 (106) and the sealing ring groove 2 (202).

7. A servo hydraulic system with adjustable oil inlet opening as claimed in claim 6, characterized in that: A circular groove (107) for engaging the filter plate (400) is provided on the inner periphery of the front side surface of the flange plate 1 (105) at the rear end. The filter plate (400) and the circular groove (107) are interlocked with each other. The flange plate 1 (105) and the flange plate 2 (201) are fixed by bolt connection.

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