A pressure testing device for valve production

Abstract

The present invention discloses a pressure testing device for valve production, which relates to the field of pressure testing technology. The present invention provides dual detection guarantees by combining conductive wire and optical detection, greatly improving the reliability and accuracy of detection. Secondly, a precise mechanical adjustment device is adopted, which can flexibly adapt to valves of different specifications, and is easy to operate and has high precision. In addition, the design of elastic shock-absorbing elements effectively reduces the vibration of the air pump during operation, improves the stability of the detection system and the service life of the equipment. The design of the transparent pool makes the internal structure clearly visible, which is convenient for operation and maintenance, and the safety and convenience of the overall system are significantly improved.

Description

Technical Field

[0001] The invention relates to the technical field of pressure testing, in particular to a pressure testing device for valve production. Background Art

[0002] Most of the existing valve pressure testing methods currently use a pressure-maintaining method to provide a constant pressure inside the valve and monitor the degree of pressure decay within a specified time. However, this method is complex to operate and requires high-precision equipment, and it takes a long time to ensure the accuracy of the measurement. The disadvantages of the existing technology are that the detection method is single, it cannot provide multiple guarantees, and the operation is complicated and the detection efficiency is low. Therefore, it is necessary to develop a device that can quickly test the pressure resistance performance of the valve. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a pressure testing equipment for valve production, comprising a transparent pool, a mounting tube is arranged at the bottom of the transparent pool, one end of the mounting tube is arranged inside the transparent pool, and the end of the mounting tube located inside the transparent pool is provided with a flange and a threaded hole for installing valves with different interfaces; light receiving elements and laser emitting elements are symmetrically arranged on both sides of the outer surface of the transparent pool, wherein the light receiving elements and the laser emitting elements can slide in a vertical direction along the surface of the transparent pool; a monitoring conductive wire frame is slidably arranged on the inner wall of the transparent pool, and a plurality of monitoring conductive wires are arranged in parallel on the inner side of the monitoring conductive wire frame.

[0004] Preferably, a top support plate and a bottom support plate are fixedly mounted on the outer surface of the transparent pool, and two parallel arranged adjusting screws are rotatably mounted on the top support plate and the bottom support plate, and the adjusting screws are threadedly matched with the C-shaped frame.

[0005] Preferably, the transparent pool is fixed on the base, the bottoms of the two adjusting screws are connected by a synchronous transmission belt, an adjusting driven gear is fixed to the bottom of one of the adjusting screws, an adjusting motor is fixedly installed on the base, and an adjusting driving gear meshing with the adjusting driven gear is fixedly installed on the output shaft of the adjusting motor.

[0006] Preferably, an extension arm is fixedly installed on the outer surface of the transparent pool, a crossbeam frame is fixedly installed on the top of the extension arm, top traction pulleys are rotatably installed at both ends of the crossbeam frame, and the two top traction pulleys are fixed by a rotating shaft so that the two top traction pulleys can rotate synchronously, and a handwheel is fixed on one of the top traction pulleys.

[0007] Preferably, two limit guide plates are symmetrically fixed on one side of the extension arm at the top of the transparent pool, and sliding grooves are arranged inside the two limit guide plates. A traction transmission belt is slidably arranged in the sliding grooves, and the sliding grooves are covered by shielding plates to prevent the traction transmission belt from falling off the sliding grooves, wherein the shielding plates and the limit guide plates are fixed in a manner that is easy to disassemble.

[0008] Preferably, the bottom of the inner wall of the transparent pool is symmetrically rotatably equipped with a bottom traction pulley, the bottom traction pulley is connected to the top traction pulley through a traction drive belt, and the inner wall of the transparent pool is also fixed with two symmetrically arranged guide slide rods, and the top ends of the two guide slide rods are fixed to the crossbeam frame.

[0009] Preferably, the monitoring conductive wire frame is also slidably mounted on two guide slide bars, and the monitoring conductive wire frame is fixed to the edge of the traction transmission belt to drive the monitoring conductive wire frame to slide on the guide slide bars.

[0010] Preferably, a support frame is also fixedly mounted on the base, a through hole is provided in the middle of the support frame, an air pump is provided in the through hole, an air pump bracket is fixedly mounted on the air pump, and the air pump bracket is elastically connected to the support frame through a plurality of elastic shock-absorbing elements.

[0011] Preferably, one end of the mounting tube located outside the transparent pool is connected to a hose through a three-way pipe, the hose is connected to the exhaust port of the air pump, and the other end of the three-way pipe is equipped with a pressure gauge.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can monitor the generation of bubbles in real time by setting a monitoring conductive wire frame and a conductive liquid in a transparent pool. When the bubble rises and contacts the monitoring conductive wire, the resistance value will change, thereby quickly judging whether the valve has a leakage problem; (2) The present invention not only uses the monitoring conductive wire to detect bubbles, but also performs optical detection through laser emission and light receiving elements. When bubbles appear in the liquid, the path and intensity of the light will change, thereby providing double detection protection. This multiple detection method improves the reliability and accuracy of the detection; (3) The air pump of the present invention is connected to the support frame through an elastic shock-absorbing element, which effectively reduces the impact of vibration on the system when the air pump is working. Reducing vibration not only improves the stability of the detection system, but also extends the service life of the equipment and ensures the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the pipe installation structure of the present invention.

[0015] Figure 3 For the present invention Figure 2Schematic diagram of the structure at point A in the middle.

[0016] Figure 4 For the present invention Figure 2 Schematic diagram of the structure at point B in the middle.

[0017] Figure 5 It is a schematic diagram of the transparent pool structure of the present invention.

[0018] Figure 6 It is a schematic diagram of the C-shaped frame structure of the present invention.

[0019] In the figure: 101-base; 102-transparent pool; 103-supporting stand; 104-extension arm; 105-beam frame; 106-handwheel; 107-C-shaped frame; 108-top support plate; 109-adjusting screw rod; 110-bottom support plate; 111-synchronous transmission belt; 112-adjusting driven gear; 113-light receiving element; 114-laser emitting element; 115-adjusting motor; 116-adjusting Section driving gear; 117-guide slide bar; 118-monitoring conductive wire frame; 119-monitoring conductive wire; 120-traction transmission belt; 121-bottom traction pulley; 122-top traction pulley; 123-limiting guide plate; 124-shielding plate; 125-installation pipe; 126-tee pipe; 127-pressure gauge; 128-hose; 129-air pump; 130-air pump bracket; 131-elastic shock absorbing element. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-6 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0021] The present invention provides a pressure testing device for valve production, comprising a transparent pool 102, a mounting tube 125 is arranged at the bottom of the transparent pool 102, one end of the mounting tube 125 is arranged inside the transparent pool 102, and one end of the mounting tube 125 located inside the transparent pool 102 is equipped with a flange and a threaded hole for mounting valves with different interfaces; light receiving elements 113 and laser emitting elements 114 are symmetrically arranged on both sides of the outer surface of the transparent pool 102, wherein the light receiving elements 113 and the laser emitting elements 114 can slide along the vertical direction of the surface of the transparent pool 102; a monitoring conductive wire frame 118 is slidably arranged on the inner wall of the transparent pool 102, and a plurality of monitoring conductive wires 119 are arranged in parallel on the inner side of the monitoring conductive wire frame 118. A top support plate 108 and a bottom support plate 110 are fixedly installed on the outer surface of the transparent pool 102, and two parallel arranged adjusting screws 109 are rotatably installed on the top support plate 108 and the bottom support plate 110, and the adjusting screws 109 are threadedly matched with the C-shaped frame 107. The transparent pool 102 is fixed on the base 101, and the bottoms of the two adjusting screw rods 109 are connected by a synchronous transmission belt 111. An adjusting driven gear 112 is fixed to the bottom of one of the adjusting screw rods 109, and an adjusting motor 115 is fixedly installed on the base 101. An adjusting driving gear 116 meshing with the adjusting driven gear 112 is fixedly installed on the output shaft of the adjusting motor 115. An extension arm 104 is fixedly installed on the outer surface of the transparent pool 102, and a crossbeam frame 105 is fixedly installed on the top of the extension arm 104. Top traction pulleys 122 are rotatably installed at both ends of the crossbeam frame 105. The two top traction pulleys 122 are fixed by a rotating shaft so that the two top traction pulleys 122 can rotate synchronously, and a hand wheel 106 is fixed on one of the top traction pulleys 122. The top of the transparent pool 102 is located on one side of the extension arm 104 and is symmetrically fixed with two limiting guide plates 123. The two limiting guide plates 123 are both provided with sliding grooves. The sliding grooves are slidably provided with a traction drive belt 120. The sliding grooves are covered by a shielding plate 124 to prevent the traction drive belt 120 from falling off the sliding grooves. The shielding plate 124 and the limiting guide plate 123 are fixed in a manner that is easy to disassemble. The bottom of the inner wall of the transparent pool 102 is symmetrically rotatably provided with a bottom traction pulley 121. The bottom traction pulley 121 and the top traction pulley 122 are connected by the traction drive belt 120. In addition, the inner wall of the transparent pool 102 is also fixed with two symmetrically arranged guide slide bars 117. The top ends of the two guide slide bars 117 are fixed to the crossbeam frame 105. The monitoring conductive wire frame 118 is also slidably mounted on the two guide slide bars 117 , and the monitoring conductive wire frame 118 is fixed to the edge of the traction drive belt 120 to drive the monitoring conductive wire frame 118 to slide on the guide slide bars 117 .A support frame 103 is also fixedly mounted on the base 101. A through hole is provided in the middle of the support frame 103. An air pump 129 is provided in the through hole. An air pump bracket 130 is fixedly mounted on the air pump 129. The air pump bracket 130 is elastically connected to the support frame 103 via a plurality of elastic shock absorbing elements 131. One end of the mounting tube 125 located outside the transparent pool 102 is connected to a hose 128 via a three-way pipe 126. The hose 128 is connected to the exhaust port of the air pump 129. A pressure gauge 127 is provided at the other end of the three-way pipe 126.

[0022] The working principle of a pressure testing device for valve production disclosed in the present invention is as follows: a light shield is set on the base 101, and the light shield is breathable. First, the valve to be tested is installed on one end of the installation tube 125 located inside the transparent pool 102, and then the hand wheel 106 is rotated. The hand wheel 106 can also be replaced by a motor. The rotation of the hand wheel 106 will drive the top traction pulley 122 to rotate, and the top traction pulley 122 drives the traction drive belt 120 to rotate. The traction drive belt 120 drives the monitoring conductive wire frame 118 to slide on the guide slide bar 117. At the beginning, the monitoring conductive wire frame 118 is located at the top of the guide slide bar 117. The monitoring conductive wire frame 118 is moved to the inside of the transparent pool 102 so that the position of the monitoring conductive wire 119 is higher than the valve. Door, at this time, liquid (non-electrolyte that can conduct electricity) is poured into the transparent pool 102, so that the liquid level is higher than the monitoring conductive wire 119, and the air pump 129 is started at this time (the elastic shock-absorbing element 131 is provided to reduce the impact of the working vibration of the air pump 129 on the adjacent devices), and the exhaust port of the air pump 129 provides positive pressure to the installation pipe 125 through the air pump 129 and the three-way pipe 126. Since the installation pipe 125 is connected to the valve, the valve is also under positive pressure at this time. The pressure in the valve can be observed through the pressure gauge 127, so as to appropriately adjust the working state of the air pump 129, and the valve should be in a closed state.

[0023] If the sealing performance of the valve is poor, that is, the pressure it can withstand is low, the valve will leak and the gas will form bubbles in the liquid. The bubbles will float upward. When the bubbles float to the monitoring conductive wire 119, a partition will be formed between the two monitoring conductive wires 119, so that there is no conductive medium between the two monitoring conductive wires 119. This means that the conductive medium between the two monitoring conductive wires 119 is reduced, so the resistance between the two monitoring conductive wires 119 will increase. By real-time monitoring of the resistance change between the two monitoring conductive wires 119, it can be known whether bubbles appear (the lower the voltage, the better), thereby judging the pressure resistance of the valve.

[0024] During the test, the adjusting motor 115 is started, and the output shaft of the adjusting motor 115 drives the adjusting driving gear 116 to rotate, and the adjusting driving gear 116 drives the adjusting driven gear 112 to rotate, and the adjusting driven gear 112 drives one of the adjusting screws 109 to rotate, and the two adjusting screws 109 are rotated simultaneously through the synchronous transmission belt 111. At this time, the C-shaped frame 107 will move along the axial direction of the adjusting screw 109, and move the light receiving element 113 and the laser emitting element 114 to a position higher than the valve. The light emitted by the laser emitting element 114 passes through the transparent pool 102 and the liquid inside the transparent pool 102, and then is received by the light receiving element 113. The laser emitting element 114 can be a plurality of parallel point light sources or a plane light source. When there are bubbles in the liquid inside the transparent pool 102, the light will be emitted from the optically dense medium into the optically sparse medium (and also from the optically sparse medium into the optically dense medium), thereby causing the path of the light to change, which will cause the light intensity received by the light receiving element 113 to weaken. At this time, the pressure resistance performance of the valve can be judged by the light receiving element 113.

Claims

1. A pressure testing device for valve production, characterized in that: It comprises a transparent pool (102), wherein a mounting pipe (125) is arranged at the bottom of the transparent pool (102), one end of the mounting pipe (125) is arranged inside the transparent pool (102), and one end of the mounting pipe (125) located inside the transparent pool (102) is provided with a flange and a threaded hole for mounting valves with different interfaces; Light receiving elements (113) and laser emitting elements (114) are symmetrically arranged on both sides of the outer surface of the transparent pool (102), wherein the light receiving elements (113) and the laser emitting elements (114) are capable of sliding along a vertical direction of the surface of the transparent pool (102); A monitoring conductive wire frame (118) is slidably arranged on the inner wall of the transparent pool (102), and a plurality of monitoring conductive wires (119) are arranged in parallel on the inner side of the monitoring conductive wire frame (118); An extension arm (104) is fixedly mounted on the outer surface of the transparent pool (102), a crossbeam frame (105) is fixedly mounted on the top of the extension arm (104), top traction pulleys (122) are rotatably mounted on both ends of the crossbeam frame (105), the two top traction pulleys (122) are fixed via a rotating shaft so that the two top traction pulleys (122) can rotate synchronously, and a hand wheel (106) is fixed on one of the top traction pulleys (122); two limiting guide plates (123) are symmetrically fixed on the top of the transparent pool (102) and located on one side of the extension arm (104), the two limiting guide plates (123) are both provided with sliding grooves inside, a traction drive belt (120) is slidably arranged in the sliding grooves, and the sliding grooves are covered by a shielding plate (124) to prevent the traction drive belt (120) from sliding. The transparent pool (102) is provided with a bottom traction pulley (121) symmetrically rotatably disposed at the bottom of the inner wall of the transparent pool (102), and the bottom traction pulley (121) is connected to the top traction pulley (122) by a traction transmission belt (120). The inner wall of the transparent pool (102) is also fixed with two symmetrically arranged guide slide bars (117), and the top ends of the two guide slide bars (117) are fixed to the crossbeam frame (105). The monitoring conductive wire frame (118) is also slidably mounted on the two guide slide bars (117), and the monitoring conductive wire frame (118) is fixed to the edge of the traction transmission belt (120) to drive the monitoring conductive wire frame (118) to slide on the guide slide bars (117).

2. A pressure testing device for valve production according to claim 1, characterized in that: A top support plate (108) and a bottom support plate (110) are fixedly mounted on the outer surface of the transparent pool (102); two parallel-arranged adjusting screws (109) are rotatably mounted on the top support plate (108) and the bottom support plate (110); the adjusting screws (109) are threadably matched with the C-shaped frame (107).

3. A pressure testing device for valve production according to claim 2, characterized in that: The transparent pool (102) is fixed on the base (101), and the bottoms of the two adjusting screw rods (109) are connected by a synchronous transmission belt (111). An adjusting driven gear (112) is fixed to the bottom of one of the adjusting screw rods (109), and an adjusting motor (115) is fixedly mounted on the base (101). An adjusting driving gear (116) meshing with the adjusting driven gear (112) is fixedly mounted on the output shaft of the adjusting motor (115).

4. A pressure testing device for valve production according to claim 3, characterized in that: A support frame (103) is also fixedly mounted on the base (101); a through hole is provided in the middle of the support frame (103); an air pump (129) is provided in the through hole; an air pump bracket (130) is fixedly mounted on the air pump (129); and the air pump bracket (130) and the support frame (103) are elastically connected via a plurality of elastic shock absorbing elements (131).

5. A pressure testing device for valve production according to claim 4, characterized in that: One end of the installation tube (125) located outside the transparent pool (102) is connected to a hose (128) via a three-way tube (126), and the hose (128) is connected to the exhaust port of an air pump (129). The other end of the three-way tube (126) is provided with a pressure gauge (127).

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