Self-closing valve multi-state test tool

Abstract

The present invention discloses a self-closing valve multi-state test tool, which is connected to an external test machine, and specifically includes a test bench, on which a fixing mechanism, a fixture mechanism, a sensing mechanism, a moving mechanism, a display mechanism and a controller are provided; the fixing mechanism is used to position and fix the self-closing valve to be tested; the moving mechanism is used to move the fixture mechanism up and down; the fixture mechanism is used to grab the self-closing valve to be tested, and under the action of the moving mechanism, the fixture mechanism moves up and down to adjust the different air pressure states of the self-closing valve to be tested; the sensing mechanism is used to monitor the different air pressure states of the self-closing valve to be tested and feed back the monitoring results to the controller; the controller controls the external test machine to work according to the monitoring results of the sensing mechanism, and feeds back the test results to the display mechanism. The present invention has accurate detection and high efficiency, effectively improves the quality and reliability of self-closing valve products, and ensures the safety of users' use of gas.

Description

Technical Field

[0001] The invention relates to the technical field of testing tooling equipment, and in particular to a multi-state testing tooling for a self-closing valve. Background Art

[0002] The pipeline gas self-closing valve, referred to as the self-closing valve, is installed on the pipeline of the low-pressure gas system. When the pipeline gas supply pressure is under-pressure or over-pressure, it can automatically close without electricity or other external power and must be opened manually.

[0003] At present, there are many manufacturers of pipeline gas self-closing valves, with large and small scales, and the consistency and quality of their products vary. Most manufacturers lack the necessary testing methods to conduct factory inspections on their products in accordance with national standards. There are many test items for pipeline gas self-closing valves, among which the two self-closing performances of overpressure and underpressure are the most critical indicators to measure whether the self-closing valve meets the standards. At present, most manufacturers do not conduct inspections or use artificially built simple test tools for inspection. There are no inspection standards and inspection methods, the inspection results are inaccurate, and the efficiency of manual inspection is low. The quality and reliability of self-closing valve products cannot be guaranteed, let alone the safety of gas users. Summary of the invention

[0004] In view of the above-mentioned problems existing in the prior art, an object is to provide a multi-state testing tool for a self-closing valve to solve the problems of inaccurate and inefficient manual pressure adjustment detection in the prior art, improve the quality and reliability of self-closing valve products, and ensure the safety of users' gas use.

[0005] The specific technical solutions are as follows:

[0006] A self-closing valve multi-state test fixture, which is connected to an external test machine, and specifically comprises a test bench, on which a fixing mechanism, a fixture mechanism, a sensing mechanism, a moving mechanism, a display mechanism and a controller are provided;

[0007] The fixing mechanism is used to locate and fix the self-closing valve to be tested;

[0008] The moving mechanism is used to move the clamp mechanism up and down;

[0009] The clamp mechanism is used to grab the self-closing valve to be tested, and under the action of the moving mechanism, the clamp mechanism moves up and down to adjust different air pressure states of the self-closing valve to be tested;

[0010] The sensing mechanism is used to monitor different air pressure states of the self-closing valve to be tested and feed back the monitoring results to the controller;

[0011] The controller controls the operation of the external testing machine according to the monitoring result of the sensing mechanism, and feeds back the test result to the display mechanism;

[0012] The controller is electrically connected to the fixing mechanism, the clamping mechanism, the sensing mechanism, the moving mechanism and the display mechanism.

[0013] Compared with the prior art, the present invention accurately and efficiently tests the performance of the three states (underpressure, neutral position, and overpressure) of the self-closing valve. The test efficiency is high, which avoids the problem of inaccurate and inefficient manual pressure detection. The entire control system realizes automatic pressurization and pressure reduction, and improves the efficiency under automated production. In short, the present invention improves the test accuracy and efficiency of the overpressure and underpressure performance detection of the self-closing valve, improves the quality and reliability of the self-closing valve product, and effectively improves the gas safety of the user.

[0014] Preferably, the fixing mechanism includes a fixed bottom plate, a horizontal slide rail arranged on the fixed bottom plate, and a horizontal slider for positioning and fixing the self-closing valve to be tested, and both sides of the horizontal slider are provided with a first plug and a second plug for blocking the self-closing valve, the first plug is fixed on the fixed bottom plate, and the second plug is driven by a driving cylinder to move horizontally. Through this arrangement, the self-closing valve to be tested can be fixed and the air tightness of the self-closing valve to be tested can be ensured during the test.

[0015] Preferably, the first plug is provided with an air inlet of an external testing machine, and the second plug is provided with an air outlet of the external testing machine. This arrangement is used to connect the external testing machine for setting.

[0016] Preferably, the moving mechanism includes a double-headed cylinder, a vertical slide rail, a vertical slider and a limiting component, the cylinder rod at the upper end of the double-headed cylinder is fixedly connected to the test bench, the cylinder rod at the lower end of the double-headed cylinder is connected to the vertical slider, and both the double-headed cylinder and the vertical slider can move up and down along the vertical slide rail, and the limiting component is used to limit the vertical stroke of the double-headed cylinder. Through this setting, the double-headed cylinder is used to increase the stroke distance of the cylinder to meet the three test states.

[0017] Preferably, the limiting component includes a limiting block connected to the double-headed cylinder and a limiting groove for limiting the vertical movement of the limiting block. Through this arrangement, the travel distance of the double-headed cylinder is limited so that it can operate better.

[0018] Preferably, the clamp mechanism includes a finger cylinder connected to a vertical slider, and two mechanical grippers connected to two parallel clamping jaws of the finger cylinder.

[0019] Preferably, the sensing mechanism includes two sensors fixed on the test bench and a sensing connecting rod, the two sensors are stacked up and down, the upper end of the sensing connecting rod can be penetrated by the sensor, the lower end of the sensing connecting rod is against the self-closing valve to be tested, and the sensing connecting rod is arranged through the palms of two mechanical grippers. Through this setting, the sensing mechanism is used to monitor the air pressure state of the self-closing valve to be tested, and the air pressure state of the self-closing valve to be tested is ensured to ensure the accuracy of the test results of the external test machine.

[0020] Preferably, the display mechanism includes an indicator light and a buzzer. Through this arrangement, the test results can be displayed intuitively for reference by the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall diagram of the self-closing valve multi-state test tooling of the present invention;

[0022] Figure 2 It is a side view of the multi-state test tool of the self-closing valve of the present invention;

[0023] Figure 3 for Figure 1 A magnified view of part A in FIG.

[0024] Figure 4 for Figure 1 A magnified view of part B in FIG.

[0025] Figure 5 It is a position diagram of the sensing connecting rod when the self-closing valve to be tested in the present invention is in an under-pressure state;

[0026] Figure 6 It is a position diagram of the sensing connecting rod when the self-closing valve to be tested in the present invention is in the middle position;

[0027] Figure 7 This is a position diagram of the sensing connecting rod when the self-closing valve to be tested in the present invention is in an overpressure state.

[0028] In the attached drawings, 1. test bench; 2. fixing mechanism; 2.1. fixed base plate; 2.2. horizontal slide rail; 2.3. horizontal slider; 2.4. first plug; 2.5. second plug; 2.6. driving cylinder; 2.7. air inlet; 2.8. air outlet; 3. clamping mechanism; 3.1. finger cylinder; 3.2. mechanical gripper; 4. sensing mechanism; 4.1. sensor; 4.2. sensing connecting rod; 5. moving mechanism; 5.1. double-headed cylinder; 5.2. vertical slide rail; 5.3. vertical slider; 5.4. limiting component; 5.4.1. limiting block; 5.4.2. limiting groove; 6. display mechanism. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1 As shown, the present invention shows a self-closing valve multi-state test fixture, which is connected to an external test machine (not shown in the figure) to assist the external test machine in detecting three states of the self-closing valve, namely, detecting the under-pressure closing, mid-position conduction and over-pressure closing of the self-closing valve. Among them, the two self-closing performances of overpressure and underpressure are the most critical indicators to measure whether the self-closing valve meets the standards, which are related to the safety of pipeline gas use.

[0031] The self-closing valve multi-state test fixture comprises a test bench 1, on which a fixing mechanism 2, a fixture mechanism 3, a sensing mechanism 4, a moving mechanism 5, a display mechanism 6 and a controller (not shown in the figure) are arranged. The controller is electrically connected to the fixing mechanism 2, the fixture mechanism 3, the sensing mechanism 4, the moving mechanism 5, and the display mechanism 6, and controls the normal operation of each mechanism.

[0032] The specific structure is as follows:

[0033] The fixing mechanism 2 is used to locate and fix the self-closing valve to be tested, and includes a fixed base plate 2.1, a horizontal slide rail 2.2, a horizontal slider 2.3, a first plug 2.4, a second plug 2.5 and a driving cylinder 2.6. The horizontal slide rail 2.2 is fixed on the fixed base plate 2.1, and the horizontal slider 2.3 can slide along the horizontal slide rail 2.2. The horizontal slider 2.3 is provided with a station for locating and fixing the self-closing valve to be tested. Before testing, the self-closing valve to be tested only needs to be installed at the station. A first plug 2.4 and a second plug 2.5 for blocking the self-closing valve are provided on both sides of the horizontal slider 2.3. The first plug 2.4 is fixed on the fixed base plate 2.1, that is, when the self-closing valve to be tested is installed on the work station, one end of the self-closing valve to be tested is blocked by the first plug 2.4, and the second plug 2.5 is driven by the driving cylinder 2.6 to move horizontally. After the self-closing valve to be tested is installed on the work station, the driving cylinder 2.6 extends the cylinder rod so that the second plug 2.5 blocks the other end of the self-closing valve to be tested, thereby ensuring the air tightness of the self-closing valve to be tested.

[0034] The moving mechanism 5 is used to move the clamp mechanism 3 up and down. Figure 2 and Figure 3As shown, it includes a double-headed cylinder 5.1, a vertical slide rail 5.2, a vertical slide block 5.3 and a stopper 5.4. Both ends of the double-headed cylinder 5.1 are provided with cylinder rods, which are connected in series to form one cylinder rod, and the double-headed cylinder 5.1 can move up and down along this cylinder rod. The cylinder rod at the upper end of the double-headed cylinder 5.1 is fixedly connected to the test bench 1, and the cylinder rod at the lower end of the double-headed cylinder 5.1 is connected to the vertical slide block 5.3. The vertical slide block 5.3 can move up and down along the vertical slide rail 5.2 under the drive of the double-headed cylinder 5.1. Because it is a double-headed cylinder 5.1, when the cylinder rod at the lower end of the double-headed cylinder 5.1 has insufficient stroke, the cylinder rod at the upper end of the double-headed cylinder 5.1 can be started to extend and retract. Since the cylinder rod at the upper end of the double-headed cylinder 5.1 is fixed on the test bench 1, the double-headed cylinder 5.1 moves corresponding to the cylinder rod at the upper end, thereby increasing the up and down movement stroke of the double-headed cylinder 5.1 to meet the three test states below.

[0035] The limiting component 5.4 is used to limit the vertical travel of the double-headed cylinder 5.1, and includes a limiting block 5.4.1 connected to the double-headed cylinder 5.1, and a limiting groove 5.4.2 used to limit the vertical movement of the limiting block 5.4.1. The limiting groove 5.4.2 is formed by the U-shaped notch of the U-shaped member, and the limiting block 5.4.1 moves in the limiting groove 5.4.2. The inner wall of the U-shaped notch of the U-shaped member serves to limit the travel of the limiting block 5.4.1.

[0036] like Figure 4 The clamp mechanism 3 is used to grab the self-closing valve to be tested, and under the action of the moving mechanism 5, the clamp mechanism 3 moves up and down to adjust the different air pressure states of the self-closing valve to be tested. Specifically, the clamp mechanism 3 includes a finger cylinder 3.1 connected to the vertical slider 5.3 and two mechanical grippers 3.2 connected to the two parallel clamping claws of the finger cylinder 3.1. Under the action of the double-headed cylinder 5.1 of the moving mechanism 5, the vertical slider 5.3 is pushed up and down, and the finger cylinder 3.1 is moved up and down at the same time. After moving into place, the finger cylinder 3.1 is started to work, and the cap sleeve of the self-closing valve to be tested is grabbed by the two mechanical grippers 3.2. The double-headed cylinder 5.1 is started again to move to drive the cap sleeve of the self-closing valve to be tested to move up and down, and the internal air pressure state of the self-closing valve to be tested is adjusted. It is judged by the sensing mechanism 4 and fed back to the external testing machine for testing.

[0037] The sensing mechanism 4 is used to monitor the different air pressure states of the self-closing valve to be tested and feed back the monitoring results to the controller. The sensing mechanism 4 includes two sensors 4.1 fixed on the test bench 1 and a sensing connecting rod 4.2. The two sensors 4.1 are stacked up and down. The upper end of the sensing connecting rod 4.2 can be penetrated by the sensor 4.1. The lower end of the sensing connecting rod 4.2 is against the self-closing valve to be tested, and the air pressure state of the self-closing valve to be tested can be sensed. The sensing connecting rod 4.2 is arranged through the palms of the two mechanical grippers 3.2. When the sensing connecting rod 4.2 is not penetrated by the sensor 4.1, it means that the self-closing valve to be tested is in an underpressure state; when the sensing connecting rod 4.2 is penetrated by one sensor 4.1, it means that the self-closing valve to be tested is in a neutral conduction state; when the sensing connecting rod 4.2 is penetrated by two sensors 4.1 at the same time, it means that the self-closing valve to be tested is in an overpressure state.

[0038] The display mechanism 6 is used to display the test results of the external test machine. According to different test results, generally qualified or unqualified, the indicator lights will light up in different colors, and a buzzer with different sounds will sound.

[0039] The testing principle of the self-closing valve multi-state testing tool of the present invention is as follows:

[0040] First, the self-closing valve to be tested is fixed on the fixing mechanism 2, and the self-closing valve to be tested is air-tightly blocked by the first plug 2.4 and the second plug 2.5. Specifically, when the self-closing valve to be tested is installed on the fixing mechanism 2, the first plug 2.4 blocks one end of the self-closing valve to be tested, and the other end is blocked by the second plug 2.5 by starting the driving cylinder 2.6 and pressing the self-closing valve to be tested;

[0041] Secondly, start the double-headed cylinder 5.1 to move up and down, thereby pushing the clamp mechanism 3 to move up and down. After the clamp mechanism 3 moves into place, start the finger cylinder 3.1, and the mechanical gripper 3.2 grabs the cap sleeve of the self-closing valve to be tested, and moves up and down under the action of the double-headed cylinder 5.1 to adjust the internal air pressure state of the self-closing valve to be tested. The induction mechanism 4 is used to judge and monitor all the time to ensure the air pressure state of the self-closing valve to be tested:

[0042] When the induction link 4.2 is not penetrated by the induction sensor 4.1, it indicates that the self-closing valve to be tested is in an under-pressure state. Figure 5 ;

[0043] When the induction link 4.2 is penetrated by an inductor 4.1, it indicates that the self-closing valve to be tested is in the middle conduction state. Figure 6 ;

[0044] When the sensing link 4.2 is simultaneously penetrated by two sensors 4.1, it indicates that the self-closing valve to be tested is in an overpressure state. Figure 7 ;

[0045] The above-mentioned air pressure state is fed back to the controller, and the controller controls the external testing machine to perform multi-state testing of the self-closing valve.

[0046] Finally, the external testing machine feeds back the feedback result to the display mechanism 6 for display. Generally, a green light will be on if the test is passed, and a red light will be on if the test is failed. In addition, different test results are accompanied by different buzzer sounds to remind the operator.

[0047] In summary, the present invention accurately and efficiently tests the performance of the three states (underpressure, neutral position, and overpressure) of the self-closing valve, and its test efficiency is high, avoiding the problem of inaccurate and inefficient manual pressure adjustment detection. The entire control system realizes automatic pressurization, pressure reduction and other kinetic energy, and improves the efficiency under automated production. In short, the present invention improves the test accuracy and efficiency of the overpressure and underpressure performance detection of the self-closing valve, improves the quality and reliability of the self-closing valve product, and effectively improves the gas safety of the user.

[0048] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, inside, outside...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0051] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-closing valve multi-state test tool, which is connected to an external testing machine, and specifically comprises a test bench (1), characterized in that: The test bench (1) is provided with a fixing mechanism (2), a clamping mechanism (3), a sensing mechanism (4), a moving mechanism (5), a display mechanism (6) and a controller; The fixing mechanism (2) is used to position and fix the self-closing valve to be tested; The moving mechanism (5) is used to move the clamping mechanism (3) up and down; The clamp mechanism (3) is used to grasp the self-closing valve to be tested, and under the action of the moving mechanism (5), the clamp mechanism (3) moves up and down to adjust the different air pressure states of the self-closing valve to be tested; the clamp mechanism (3) comprises a finger cylinder (3.1) connected to the moving mechanism (5), and two mechanical grippers (3.2) connected to two parallel clamping claws of the finger cylinder (3.1); The sensing mechanism (4) is used to monitor different air pressure states of the self-closing valve to be tested and feed back the monitoring results to the controller; the sensing mechanism (4) comprises two sensors (4.1) fixed on the test bench (1) and a sensing connecting rod (4.2); the two sensors (4.1) are stacked up and down, the upper end of the sensing connecting rod (4.2) can be penetrated by the sensor (4.1), the lower end of the sensing connecting rod (4.2) is against the self-closing valve to be tested, and the sensing connecting rod (4.2) is arranged through the palms of two mechanical grippers (3.2); The controller controls the operation of the external test machine according to the monitoring result of the sensing mechanism (4), and feeds back the test result to the display mechanism (6); when the sensing connecting rod (4.2) is not provided with a sensor (4.1), it indicates that the self-closing valve to be tested is in an underpressure state; when the sensing connecting rod (4.2) is provided with a sensor (4.1), it indicates that the self-closing valve to be tested is in a neutral conduction state; when the sensing connecting rod (4.2) is provided with two sensors (4.1) at the same time, it indicates that the self-closing valve to be tested is in an overpressure state; The controller is electrically connected to the fixing mechanism (2), the clamping mechanism (3), the sensing mechanism (4), the moving mechanism (5), and the display mechanism (6).

2. The self-closing valve multi-state test tool according to claim 1 is characterized in that: The fixing mechanism (2) comprises a fixing base plate (2.1), a horizontal slide rail (2.2) arranged on the fixing base plate (2.1), and a horizontal slider (2.3) for positioning and fixing the self-closing valve to be tested, and a first plug (2.4) and a second plug (2.5) for blocking the self-closing valve are arranged on both sides of the horizontal slider (2.3); the first plug (2.4) is fixed on the fixing base plate (2.1), and the second plug (2.5) moves horizontally under the driving action of a driving cylinder (2.6).

3. The self-closing valve multi-state test tool according to claim 2 is characterized in that: The first plug (2.4) is provided with an air inlet (2.7) of the external testing machine, and the second plug (2.5) is provided with an air outlet (2.8) of the external testing machine.

4. The self-closing valve multi-state test tool according to claim 1, characterized in that: The moving mechanism (5) comprises a double-headed cylinder (5.1), a vertical slide rail (5.2), a vertical slider (5.3) and a limiting component (5.4); the cylinder rod at the upper end of the double-headed cylinder (5.1) is fixedly connected to the test bench (1); the cylinder rod at the lower end of the double-headed cylinder (5.1) is connected to the vertical slider (5.3); and both the double-headed cylinder (5.1) and the vertical slider (5.3) can move up and down along the vertical slide rail (5.2); and the limiting component (5.4) is used to limit the vertical travel of the double-headed cylinder (5.1).

5. The self-closing valve multi-state test tool according to claim 4, characterized in that: The limiting component (5.4) comprises a limiting block (5.4.1) connected to the double-head cylinder (5.1) and a limiting groove (5.4.2) used for limiting the vertical movement of the limiting block (5.4.1).

6. The self-closing valve multi-state test tool according to claim 1, characterized in that: The display mechanism (6) comprises an indicator light and a buzzer.

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