Air leakage detection machine for pressure gauge

Abstract

The utility model discloses a pressure gauge air leakage detection machine, which relates to the technical field of pressure gauge detection, and comprises a station table and a gauge body, a joint is fixedly arranged on the gauge body, an air supply mechanism is arranged above the station table, the air supply mechanism comprises an adaptive assembly, the adaptive assembly comprises a plurality of groups of upper pipes and hydraulic rods, and the upper pipes are connected with the hydraulic rods. The upper pipe is sleeved with a conical rubber ring which is used for improving the sealing performance between the connector and the upper pipe. According to the utility model, through the designed gas supply mechanism and the plurality of groups of upper pipes with different diameters and conical rubber rings, the left ends of the corresponding upper pipes are inserted into the joint through automatic position adjustment of the moving assembly, so that joints with different diameters can be adapted without replacing a special gas pipeline, the dependence on a plurality of sets of gas pipelines is reduced, the cost is reduced, and the working efficiency is improved. The applicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pressure gauge detection technical field, and specifically is a pressure gauge air leakage detection machine. BACKGROUND

[0002] As the most commonly used pressure measuring equipment in the industrial field, pressure gauges are widely used in the fields of heat pipe networks, oil and gas transmission, aerospace, new energy vehicles, etc. The air tightness thereof is directly related to the pressure measurement accuracy and system operation safety. In the process of producing pressure gauges, the air tightness thereof needs to be detected to ensure the stability of the pressure gauges in the subsequent use process and avoid functional failure caused by air leakage.

[0003] The patent application No. 202223409561.6 discloses a pressure gauge air leakage detection device, which detects whether the pressure gauge leaks by outputting pressurized gas into the pressure gauge through the end of the gas pipeline against the detection port on the pressure gauge, but when the diameters of the joints of different pressure gauges are different, other gas pipelines matching the diameters of the joints need to be replaced, which requires multiple gas pipelines to be prepared, thereby increasing the use cost and reducing the applicability to joints with different diameters. Therefore, we propose a pressure gauge air leakage detection machine. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a pressure gauge air leakage detection machine to solve the technical problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pressure gauge air leakage detection machine, comprising a work station and a gauge body, a joint is fixedly arranged on the gauge body, a gas feeding mechanism is arranged above the work station, and the gas feeding mechanism comprises:

[0006] An adaptive assembly comprises a plurality of upper pipes and hydraulic rods, a conical rubber ring is arranged outside the upper pipe to increase the sealing property between the joint and the upper pipe;

[0007] A blow head is fixedly arranged at the working end of the hydraulic rod, a rubber sealing ring is fixedly arranged at the end of the blow head to increase the sealing property when the blow head contacts the upper pipe.

[0008] Preferably, an L-shaped pipe is fixedly arranged on the blow head, a connecting spring is fixedly arranged at the end of the L-shaped pipe, and a gas receiving head is fixedly arranged at the end of the connecting spring.

[0009] Preferably, the gas feeding mechanism further comprises a moving assembly, and the moving assembly comprises:

[0010] The left-right moving piece comprises a concave plate, a plurality of groups of movable strips are slidably arranged inside the concave plate, a connecting spring is fixedly arranged between one end of the movable strip and the concave plate, and a sleeve ring is further sleeved and fixed to the outside of the upper pipe.

[0011] Preferably, the moving assembly further comprises a front-rear moving piece, the front-rear moving piece comprises a chassis fixed to the top of the workbench and a screw rod rotatably arranged on the chassis, a nut seat is arranged on the outside of the screw rod, and the nut seat is used for driving the concave plate to move in the front-rear direction.

[0012] Preferably, the top of the workbench is further provided with two groups of positioning pieces, the positioning piece comprises a mounting frame fixed to the top of the workbench, a movable T-shaped rod is slidably arranged in the inside of the mounting frame, and a limiting column is fixedly arranged at the top of the movable T-shaped rod.

[0013] Preferably, the outside of the limiting column is sleeved with a mounting spring, and the two ends of the mounting spring are fixed to the mounting frame and the bottom of the movable T-shaped rod respectively.

[0014] Preferably, the top of the workbench is provided with a clamping piece for clamping the watch body, the clamping piece comprises two groups of clamping plates and two groups of fixed screw columns fixed to the top of the workbench.

[0015] Preferably, the top of the workbench is further provided with a lifting piece for lifting the watch body, the lifting piece comprises a hydraulic cylinder fixed to the top of the workbench, and a placing disc is fixedly arranged at the working end of the hydraulic cylinder.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] (1) The utility model discloses a gas feeding mechanism, which comprises a plurality of upper pipes with different diameters provided with tapered rubber rings, and the position of the moving assembly is automatically adjusted, so that the left end of the corresponding upper pipe is inserted into the inside of the connector, without the need to replace the special gas pipeline, the different diameter connectors can be matched, the dependence on multiple gas pipelines is reduced, the cost is reduced, the applicability is improved, the tapered rubber ring at the end of the upper pipe is tightly attached to the inner wall of the connector to form the first seal, the rubber sealing ring at the end of the blowing head is tightly attached to the right end of the upper pipe to form the second seal, the connection between the upper pipe and the connector and the connection between the upper pipe and the blowing head are reinforced and sealed, and the sealing performance during the conveying of the watch body is improved.

[0018] (2) The utility model discloses a positioning piece, which improves the accuracy of the insertion of the upper pipe into the connector, enables the upper pipe to be smoothly inserted into the inside of the connector, avoids the problems of difficult insertion and poor sealing caused by misalignment, improves the stability and reliability of the detection process, quickly positions the upper pipe, greatly shortens the detection period, improves the detection quantity per unit time, and improves the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure schematic view of the utility model;

[0020] Figure 2 It is the right view structure schematic view of the utility model;

[0021] Figure 3 It is the structure schematic view of the utility model's clamping plate and bottom bracket from the bottom;

[0022] Figure 4 It is the structure schematic view of the utility model's hydraulic rod;

[0023] Figure 5 It is the structure schematic view of the utility model's conical rubber ring and concave plate;

[0024] Figure 6 It is the structure schematic view of the utility model's mounting rack from the left;

[0025] In the figure: 100, workstation table; 101, fixed plate; 102, fixed stud; 103, clamping plate; 104, nut ring; 105, table body; 106, joint; 107, placing disc; 108, hydraulic cylinder; 200, concave plate; 201, conical rubber ring; 202, hydraulic rod; 203, driving motor; 204, movable strip; 205, upper tube; 206, blowing head; 207, nut seat; 208, rubber sealing ring; 209, screw rod; 210, bottom bracket; 211, L-shaped tube; 212, collar; 213, connecting spring; 214, gas connector; 300, mounting rack; 301, mounting spring; 302, movable T-shaped rod; 303, limiting column. DETAILED DESCRIPTION

[0026] The technical scheme of the utility model will be described below in conjunction with embodiments, apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0027] Embodiment one

[0028] Please refer to Figures 1-6 The utility model provides a technical scheme: a pressure gauge gas leakage detection machine, including workstation table 100 and table body 105, the joint 106 is fixedly arranged on the table body 105, the workstation table 100 is provided with gas sending mechanism in the top, and the gas sending mechanism includes:

[0029] The adapter assembly comprises a plurality of upper pipes 205 and hydraulic rods 202. The blow head 206 can be pushed to the left by the hydraulic rod 202, and then the corresponding upper pipe 205 is pushed to the joint 106 and inserted into the joint 106. The different upper pipes 205 and the external conical rubber ring 201 have different diameters, and the upper pipe 205 is sleeved with the conical rubber ring 201 to increase the sealing performance between the joint 106 and the upper pipe 205;

[0030] The working end of the hydraulic rod 202 is fixedly provided with the blow head 206, and the end of the blow head 206 is fixedly provided with a rubber sealing ring 208. When the blow head 206 is close to the right end of the upper pipe 205, the rubber sealing ring 208 is driven to contact the right end of the upper pipe 205, thereby increasing the sealing performance between the blow head 206 and the upper pipe 205.

[0031] The blow head 206 is fixedly provided with an L-shaped pipe 211, the end of the L-shaped pipe 211 is fixedly provided with a connecting spring 213, and the end of the connecting spring 213 is fixedly provided with a gas connection head 214. The gas connection head 214 is connected to a gas supply device to provide pressurized gas for detection. The bottom of the hydraulic rod 202 and the workbench 100 are fixedly provided with a support.

[0032] Embodiment two

[0033] Based on the embodiment one, see Figures 1-6 The moving assembly comprises:

[0034] The left-right moving piece comprises a concave plate 200, and a plurality of movable strips 204 are slidably arranged in the concave plate 200. The movable strips 204 can move leftward and rightward in the concave plate 200. One end of the movable strip 204 and the concave plate 200 are fixedly provided with a connecting spring 213. When the left end of the upper pipe 205 is inserted into the joint 106, and after the working end of the hydraulic rod 202 is reset after detection, the upper pipe 205 can be reset to the original position under the action of the connecting spring 213. The outer part of the upper pipe 205 is further sleeved with a sleeve ring 212, and the other end of the movable strip 204 is fixed on the sleeve ring 212.

[0035] The moving assembly further comprises a front-rear moving piece. The front-rear moving piece comprises a base frame 210 fixed on the top of the workbench 100 and a screw rod 209 rotatably arranged on the base frame 210. The outer part of the screw rod 209 is provided with a nut seat 207. When the screw rod 209 is rotated forward or reversely, the nut seat 207 moves forward or reversely on the screw rod 209, so as to drive the concave plate 200 to move forward or reversely.

[0036] The concave plate 200 is fixed on the top of the nut seat 207, the drive motor 203 is fixed on the chassis 210, the drive motor 203 drives the screw rod 209 to rotate, and the working end of the drive motor 203 extends to the surface of the screw rod 209.

[0037] The utility model discloses a gas feeding mechanism, containing multiple groups of different diameter upper pipes 205 with conical rubber rings 201, through the automatic adjustment position of moving assembly, the left end of corresponding upper pipe 205 is inserted into the inside of connector 106, without replacing special gas pipeline, can be adapted to different diameter connector 106, reduce the dependence on multiple sets of gas pipeline, reduce cost, increase applicability, and the conical rubber ring 201 of the end of upper pipe 205 is closely attached to the inner wall of connector 106, forms the first sealing, and the rubber sealing ring 208 at the end of blow head 206 is tightly contacted with the right end of upper pipe 205, forms the second sealing, strengthens the sealing of the connecting place of upper pipe 205 and connector 106 and the connecting place of upper pipe 205 and blow head 206, and increases the sealing performance in the process of conveying gas to the surface body 105.

[0038] Example three

[0039] On the basis of example two, please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 And Figure 6 , the top of the workbench 100 is also provided with two sets of positioning members, the positioning member includes a mounting frame 300 fixed on the top of the workbench 100, the top of the workbench 100 is fixedly provided with a fixed plate 101, the inside of the mounting frame 300 is slidably provided with a movable T-shaped rod 302, the movable T-shaped rod 302 moves up and down in the inside of the mounting frame 300, and the movable T-shaped rod 302 is an inverted T-shaped structure, and the top of the movable T-shaped rod 302 is fixedly provided with a limiting column 303, when moving forward and backward during positioning, the movable strip 204 is moved along with the concave plate 200, then when the connector 106 of different diameters of the upper pipe 205 does not match, the movable strip 204 continues to move, when the movable strip 204 contacts the limiting column 303, the limiting column 303 moves downward, so that the movable strip 204 can pass through, when the upper pipe 205 matches the connector 106, the upper pipe 205 and the connector 106 are on the same axis, and the two sets of limiting columns 303 clamp and limit the two sets of movable strips 204 located outside the upper pipe 205, and the movable T-shaped rod 302 can move up and down in the inside of the mounting frame 300.

[0040] The limiting column 303 is sleeved with a mounting spring 301, the top of the limiting column 303 can be reset after leaving the position directly below the movable strip 204, and the two ends of the mounting spring 301 are fixed on the mounting frame 300 and the bottom of the movable T-shaped rod 302 respectively.

[0041] The utility model discloses a positioning piece is designed, has improved the accuracy of upper tube 205 insertion joint 106, makes upper tube 205 can smoothly insert joint 106 inside, avoided the problem such as difficult insertion, seal not strict caused by not aligning, improved the stability and reliability of detection process, and the tender is not positioned to upper tube 205 rapidly, greatly shortened the detection period, improved the detection quantity in unit time, improved production efficiency.

[0042] In the embodiment, the top of the work station 100 is provided with clamping pieces for clamping the watch body 105, the clamping pieces include two sets of clamping plates 103 and two sets of fixing studs 102 fixed on the top of the work station 100, the top of the fixing stud 102 penetrates through the inside of the clamping plate 103, and the outside of the fixing stud 102 is threadedly connected with two sets of nut rings 104.

[0043] In the embodiment, the top of the work station 100 is further provided with lifting pieces for lifting the watch body 105, the lifting pieces include a hydraulic cylinder 108 fixed on the top of the work station 100, the hydraulic cylinder 108 and the hydraulic rod 202 are driven to operate by a hydraulic pump station as a driving source, the working end of the hydraulic cylinder 108 is fixedly provided with a placing disc 107, and the bottom of the watch body 105 is located above the placing disc 107; before detection, the placing disc 107 on which the watch body 105 is placed is driven to ascend or descend to a suitable height by starting the hydraulic cylinder 108, and then the watch body 105 is placed on the placing disc 107 for detection.

[0044] The working principle and use process of the utility model are as follows:

[0045] The utility model discloses a sealing device for watch body, including two groups of clamping plates 103, the fixed stud 102, the nut ring 104, the screw rod 209, the hydraulic rod 202, the blow head 206, the rubber sealing ring 208, the upper pipe 205, the joint 106, the taper rubber ring 201, the sleeve ring 212, the movable strip 204, the recessed plate 200 and the L -shaped pipe 211, the utility model discloses when using, the different watch body 105 is placed between two groups of clamping plates 103, the diameter of joint 106 on different watch body 105 is different at this moment, then the clamping plate 103 is moved to the direction close to watch body 105 and is clamped tightly, then the two groups of nut ring 104 outside fixed stud 102 are rotated and are tightly fixed clamping plate 103 to the opposite direction, then the drive motor 203 is started, and the working end of drive motor 203 drives the screw rod 209 to carry out normal rotation or reverse rotation, then the nut seat 207 outside screw rod 209 moves to the forward or rear direction, when the diameter of joint 106 is mutually matched, the upper pipe 205 moves to the same axis with joint 106 and stops moving, then the hydraulic rod 202 is started, and the working end of hydraulic rod 202 moves to the left direction and drives the blow head 206 and rubber sealing ring 208 to follow the movement, then the left side of rubber sealing ring 208 contacts the right side surface of upper pipe 205 and is pressed tightly by hydraulic rod 202, then the corresponding upper pipe 205 is pushed to the left direction and moves, and the external taper rubber ring 201 and sleeve ring 212 move, then movable strip 204 also slides to the left direction in recessed plate 200, at this time, connecting spring 213 starts to compress, then the left end of upper pipe 205 inserts the inside of joint 106 under the pushing action of hydraulic rod 202, then the left end of taper rubber ring 201 on upper pipe 205 also inserts the inside of joint 106 and contacts and is pressed tightly with the inner wall of joint 106, then the working end of hydraulic rod 202 stops moving, at this time, the sealing between joint 106 and upper pipe 205 is increased by taper rubber ring 201;

[0046] Then the pressurized gas is transported to the inside of watch body 105 through blow head 206, upper pipe 205 and joint 106 through L-shaped pipe 211, at this time, the pointer rotates, when the pressurization in the inside of watch body 105 is finished, the pointer is in the state of not moving, then pressure maintaining is carried out for a period of time, during this period, whether the position of pointer on watch body 105 is consistent with the position of pointer when injecting watch body 105 is checked, if not, the sealing of watch body 105 is affected, and the gas leakage phenomenon is generated, when the detection is finished, the operation according to the above opposite principle is carried out, and then connecting spring 213 starts to reset, at this time, upper pipe 205 moves to the right direction and returns to the original position, and movable strip 204 slides to the right direction in recessed plate 200, then upper pipe 205 returns to the original position;

[0047] In order to increase the same axial line of the upper pipe 205 and the joint 106 during the front and back movement, the upper pipe 205 in the same axial line is positioned, and the corresponding movable strip 204 is also moved forward and backward during the positioning when the recessed plate 200 is moved forward and backward, then the two groups of movable strips 204 on the upper pipe 205 are located between the two groups of limiting columns 303, that is, the two groups of movable strips 204 on the upper pipe 205 are clamped and limited by the two groups of limiting columns 303, at this time, the upper pipe 205 and the joint 106 are in the same axial line, and the left end of the upper pipe 205 can be aligned when penetrating into the inside of the joint 106, and when the top of the limiting column 303 collides with the movable strip 204, the limiting column 303 is extruded by the movable strip 204 and starts to move downward, at this time, the installed spring 301 starts to stretch, and then when the top of the limiting column 303 is not located directly below the movable strip 204, the installed spring 301 resets, so that the movable T-shaped rod 302 moves upward and drives the limiting column 303 to move upward to the original position.

[0048] The above embodiments are only used to illustrate the technical method of the utility model and not to limit, although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A pressure gauge air leakage detection machine, comprising a workbench (100) and a gauge body (105), a joint (106) is fixedly arranged on the gauge body (105), and a gas feeding mechanism is arranged above the workbench (100), characterized in that, The air feeding mechanism comprises: The adapter assembly comprises a plurality of upper pipes (205) and hydraulic rods (202), the outer part of the upper pipe (205) is sleeved with a tapered rubber ring (201) for increasing the sealing between the joint (106) and the upper pipe (205); The working end of the hydraulic rod (202) is fixedly provided with a blowing head (206), the end of the blowing head (206) is fixedly provided with a rubber sealing ring (208) for increasing the sealing when the blowing head (206) contacts with the upper pipe (205).

2. The pressure gauge leak detection machine of claim 1, wherein: The blowing head (206) is fixedly provided with an L-shaped pipe (211), the end of the L-shaped pipe (211) is fixedly provided with a connecting spring (213), and the end of the connecting spring (213) is fixedly provided with an air inlet head (214).

3. The pressure gauge leak detection machine of claim 1, wherein: The air feeding mechanism further comprises a moving assembly, and the moving assembly comprises: The left and right moving member comprises a concave plate (200), a plurality of movable strips (204) are slidably arranged in the concave plate (200), a connecting spring (213) is fixedly arranged between one end of the movable strip (204) and the concave plate (200), and a sleeve ring (212) is further fixedly sleeved on the outer part of the upper pipe (205).

4. The pressure gauge leak detection machine of claim 3, wherein: The moving assembly further comprises a front and rear moving member, the front and rear moving member comprises a chassis (210) fixed on the top of the workbench (100) and a screw rod (209) rotatably arranged on the chassis (210), and a nut seat (207) is arranged on the outer part of the screw rod (209) for driving the concave plate (200) to move in the front and rear directions.

5. The pressure gauge leak detection machine of claim 1, wherein: The top of the workbench (100) is further provided with two positioning members, the positioning member comprises a mounting frame (300) fixed on the top of the workbench (100), and a movable T-shaped rod (302) is slidably arranged in the mounting frame (300).

6. The pressure gauge leak detection machine of claim 5, wherein: The outer part of the limiting column (303) is sleeved with a mounting spring (301), and the two ends of the mounting spring (301) are fixedly arranged on the mounting frame (300) and the bottom of the movable T-shaped rod (302), respectively.

7. The pressure gauge leak detection machine of claim 1, wherein: The top of the workbench (100) is provided with a clamping member for clamping the surface body (105), and the clamping member comprises two clamping plates (103) and two fixed screw columns (102) fixed on the top of the workbench (100).

8. The pressure gauge leak detection machine of claim 1, wherein: The top of the workbench (100) is further provided with a lifting member for lifting the surface body (105), and the lifting member comprises a hydraulic cylinder (108) fixed on the top of the workbench (100), and a placing disc (107) is fixedly arranged on the working end of the hydraulic cylinder (108).

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