Low-temperature valve air tightness testing device

Abstract

The utility model relates to the technical field of low-temperature valve testing, and provides a low-temperature valve air tightness testing device which comprises a U-shaped plate, a controller, two sliding grooves, inner walls oppositely arranged on the U-shaped plate, a sliding plate jointly connected to the two sliding grooves in a sliding mode, a placing seat, a center arranged at the top of the sliding plate and an electric telescopic rod. The sliding blocks are fixedly mounted on the inner top walls of the two sliding grooves; the low-temperature valve is placed on the placing seat, the distance detected by the laser distance measuring sensor is set, after setting, the electric telescopic rod is started, the electric telescopic rod contracts to drive the sliding plate to slide in the sliding groove, the low-temperature valve is made to move upwards, and meanwhile whether the low-temperature valve reaches or not is detected through the laser distance measuring sensor; and if the position of the laser distance measuring sensor is reached, information is transmitted to the controller, the electric telescopic rod is controlled to be closed, and then the low-temperature valve is tested, so that the purpose of accurately adjusting the low-temperature valve is achieved, and the working efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to low temperature valve test technical field, concretely relates to a low temperature valve air tightness testing device. BACKGROUND

[0002] Low temperature valve is the valve of medium temperature at -40 DEG C to -196 DEG C, and common low temperature valve is divided into low temperature butterfly valve, low temperature gate valve, low temperature ball valve, low temperature stop valve, low temperature check valve, low temperature throttle valve etc.

[0003] For example, the publication number CN202223341829.7 proposes a low temperature valve air tightness testing device, which comprises a support, a first sealing head, a second sealing head opposite to the first sealing head, a driving structure for driving the first sealing head and the second sealing head to approach each other, wherein the second sealing head and the first sealing head are structurally identical, comprising an outer seal in the shape of a cylindrical open at both ends, with an inner diameter larger than the outer diameter of the two ends of the low temperature valve; a gas pipe is provided on the mounting seat; an inner seal is coaxially arranged in the outer seal in the shape of a cylinder; the outer diameter of the end of the inner seal away from the mounting seat is smaller than the inner diameter of the two ends of the low temperature valve, and the outer diameter of the inner seal gradually increases as it approaches the mounting seat; the axis center of the inner seal is provided with a channel communicating with the gas pipe. The testing device has good sealing effect and can adapt to low temperature valves of different diameters.

[0004] However, in the implementation of the related technology, it is found that the above-mentioned low temperature valve air tightness testing device has the following problems: when detecting low temperature valves of different diameters, the height of the low temperature valve is adjusted by the nut, but this method is not accurate and needs to be adjusted repeatedly to align the two ends of the valve for detection, thereby causing low work efficiency, therefore, a low temperature valve air tightness testing device is proposed. UTILITY MODEL CONTENTS

[0005] The utility model proposes a low temperature valve air tightness testing device, which solves the problem of difficult accurate adjustment of the low temperature valve in the related technology, and needs to be adjusted repeatedly to align the two ends of the low temperature valve for detection during adjustment, thereby causing low work efficiency.

[0006] The technical scheme of the utility model is as follows: a low temperature valve air tightness testing device, comprising:

[0007] A U-shaped plate and a controller;

[0008] Two sliding grooves are oppositely provided on the inner wall of the U-shaped plate;

[0009] A sliding plate is jointly and slidingly connected on the two sliding grooves;

[0010] A placing seat is arranged at the center of the top of the sliding plate;

[0011] An electric telescopic rod is fixedly installed on the inner top wall of the two sliding grooves, and the output end is connected with the sliding plate.

[0012] An L-shaped plate is fixedly installed at the center of the inner bottom wall of the U-shaped plate.

[0013] A laser ranging sensor is arranged on the inner top wall of the U-shaped plate.

[0014] A moving mechanism is arranged on both sides of the inner wall of the U-shaped plate.

[0015] A sealing mechanism is arranged on the moving mechanism.

[0016] Optionally, the controller is electrically connected with the electric telescopic rod and the laser ranging sensor.

[0017] Optionally, the moving mechanism comprises:

[0018] A guide rod is fixedly installed on both sides of the inner wall of the U-shaped plate.

[0019] Two moving plates are slidingly connected with the outer side wall of the guide rod.

[0020] Optionally, the moving mechanism further comprises:

[0021] A bidirectional screw rod is fixedly installed on both sides of the inner wall of the U-shaped plate, and the bidirectional screw rod is located on one side of the guide rod, and the outer side wall of the bidirectional screw rod is threadedly connected with the two moving plates.

[0022] Optionally, the moving mechanism further comprises:

[0023] A rotating wheel is fixedly installed on one end of the bidirectional screw rod, and one end of the bidirectional screw rod is movably penetrated through the U-shaped plate for installing the rotating wheel.

[0024] A plurality of anti-skid sleeves are sleeved on the outer side wall of the rotating wheel.

[0025] Optionally, the sealing mechanism comprises:

[0026] Two outer sealing heads are arranged on one side of the two moving plates.

[0027] Two inner sealing heads are arranged inside the two outer sealing heads.

[0028] Optionally, the sealing mechanism further comprises:

[0029] A pipeline is arranged on one of the two inner sealing heads through a channel, and one end of the pipeline is penetrated through one of the two moving plates and is provided with an external thread.

[0030] A sealing cover is threadedly connected with one end of the pipeline.

[0031] Optionally, four supporting blocks are fixedly installed at the bottom of the U-shaped plate, and the four supporting blocks are distributed at four corners of the bottom of the U-shaped plate.

[0032] The working principle and beneficial effects of the utility model are as follows:

[0033] In use, the low-temperature valve is placed on the placing seat, and the distance is detected through the laser ranging sensor, after setting, the electric telescopic rod is started, the electric telescopic rod is retracted to drive the sliding plate to slide in the sliding groove, the low-temperature valve is moved upward, and whether the low-temperature valve reaches the position of the laser ranging sensor is detected, if so, information is transmitted to the controller, the electric telescopic rod is closed, then the low-temperature valve is tested, so that the purpose of accurately adjusting the low-temperature valve is realized, and the work efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0035] Figure 1 The overall three-dimensional structure schematic diagram is provided for the utility model;

[0036] Figure 2 The overall overhead three-dimensional structure schematic diagram is provided for the utility model;

[0037] Figure 3 The overall side view three-dimensional structure schematic diagram is provided for the utility model.

[0038] Figure 4 The partial sectional three-dimensional structure schematic diagram of the U-shaped plate is provided for the utility model.

[0039] In the drawing: 1, U-shaped plate;2, sliding groove;3, sliding plate;4, placing seat;5, electric telescopic rod;6, L-shaped plate;7, laser ranging sensor;

[0040] 8, moving mechanism;80, guide rod;81, moving plate;82, bidirectional screw;83, rotating wheel;84, anti-skid sleeve;

[0041] 9, sealing mechanism;90, outer sealing head;91, inner sealing head;92, pipeline;93, sealing cover;

[0042] 10, supporting block. DETAILED DESCRIPTION

[0043] The technical solutions of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor are involved in the protection scope of the utility model.

[0044] Embodiment one

[0045] Please refer to Figure 1 - Figure 4 The technical solutions of the utility model are as follows: a low-temperature valve airtightness testing device, comprising:

[0046] U-shaped plate 1 and controller;

[0047] Two sliding grooves 2 are oppositely arranged on the inner wall of the U-shaped plate 1, a sliding plate 3 is connected to the two sliding grooves 2 in a sliding manner, a placing seat 4 is arranged at the center of the top of the sliding plate 3, an electric telescopic rod 5 is fixedly installed on the inner top wall of the two sliding grooves 2, and the output end is connected with the sliding plate 3, the electric telescopic rod 5 is used for driving the sliding plate 3 to move in the sliding groove 2, the position of the placing seat 4 is adjusted, and the placing seat 4 is used for placing the low-temperature valve.

[0048] L-shaped plate 6 is fixedly installed at the center of the inner bottom wall of the U-shaped plate 1, laser ranging sensor 7 is arranged on the inner top wall of the U-shaped plate 1, laser ranging sensor 7 is used for detecting the position of the low-temperature valve adjustment, and the low-temperature valve can be accurately adjusted.

[0049] The moving mechanism 8 is arranged on the two sides of the inner wall of the U-shaped plate 1, the sealing mechanism 9 is arranged on the moving mechanism 8, the moving mechanism 8 is used for driving the sealing mechanism 9 to move, and then the sealing mechanism 9 is used for sealing the two ends of the low-temperature valve.

[0050] Further, four supporting blocks are fixedly installed on the bottom of the U-shaped plate, and the four supporting blocks are distributed at the four corners of the bottom of the U-shaped plate.

[0051] Specifically, the supporting blocks are used for supporting the device, and the stability of the device is effectively improved.

[0052] Embodiment two

[0053] On the basis of embodiment one, in the embodiment, the moving mechanism 8 comprises: guide rods 80 fixedly installed on the inner walls of the two sides of the U-shaped plate 1, two moving plates 81 slidably connected to the outer walls of the guide rods 80, the moving mechanism 8 further comprises: bidirectional screw rods 82 fixedly installed on the two sides of the inner walls of the U-shaped plate 1, the bidirectional screw rods 82 are located on one side of the guide rods 80, the outer walls of the bidirectional screw rods 82 are threadedly connected between the two moving plates 81, the moving mechanism 8 further comprises: a rotating wheel 83 fixedly installed on one end of the bidirectional screw rod 82, one end of the bidirectional screw rod 82 movably penetrates the U-shaped plate 1 for installing the rotating wheel 83, a plurality of anti-skid sleeves 84 sleeved on the outer walls of the rotating wheel 83, the sealing mechanism 9 comprises: two outer sealing heads 90 arranged on one side of the two moving plates 81, two inner sealing heads 91 arranged inside the two outer sealing heads 90, the sealing mechanism 9 further comprises: a pipeline 92 arranged on one of the two inner sealing heads 91 through the channel, one end of the pipeline 92 penetrates one of the two moving plates 81 and is provided with an external thread, and a sealing cover 93 threadedly connected to one end of the pipeline 92.

[0054] The technical scheme provided by the embodiment is as follows: by rotating the rotating wheel 83, the bidirectional screw rod 82 is rotated on the U-shaped plate 1, and the moving plate 81 is slidably connected to the guide rod 80, so that the two outer sealing heads 90 are close to each other, and the outer sealing head 90 and the inner sealing head 91 clamp the two ends of the low-temperature valve, and the outer sealing head 90 and the inner sealing head 91 seal the two ends of the low-temperature valve, then the liquid nitrogen is injected into the low-temperature valve through the pipeline 92, and the air tightness and low-temperature of the low-temperature valve are detected.

[0055] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cryogenic valve leak test apparatus, comprising: The utility model relates to a kind of laser distance measuring device, including: U-shaped plate (1) and controller; Two sliding grooves (2) are oppositely opened in the inner wall of the U-shaped plate (1); Slide plate (3) is connected in two sliding grooves (2) with sliding; Placement seat (4) is arranged in the center of the top of slide plate (3); Electric telescopic rod (5) is fixedly installed in the inner top wall of two sliding grooves (2), and the output end is connected between the slide plate (3); L-shaped plate (6) is fixedly installed at the center of the inner bottom wall of the U-shaped plate (1); Laser ranging sensor (7) is arranged in the inner top wall of the U-shaped plate (1); Moving mechanism (8) is arranged in the inner wall of the U-shaped plate (1) on both sides; Sealing mechanism (9) is arranged on the moving mechanism (8).

2. A cryogenic valve leak testing apparatus as defined in claim 1, wherein, The controller is electrically connected between the electric telescopic rod (5) and the laser ranging sensor (7).

3. A cryogenic valve leak testing apparatus as defined in claim 1, wherein, The moving mechanism (8) includes: Guide rod (80) is fixedly installed in the inner wall of the U-shaped plate (1) on both sides; Two moving plates (81) are slidably connected to the outer side wall of the guide rod (80).

4. A cryogenic valve leak testing apparatus as defined in claim 3, wherein, The moving mechanism (8) further includes: Bidirectional screw rod (82) is fixedly installed in the inner wall of the U-shaped plate (1) on both sides, the bidirectional screw rod (82) is located on one side of the guide rod (80), and the outer side wall of the bidirectional screw rod (82) is threadedly connected between the two moving plates (81).

5. A cryogenic valve leak testing apparatus as defined in claim 4, wherein, The moving mechanism (8) further includes: Rotating wheel (83) is fixedly installed at one end of the bidirectional screw rod (82), and one end of the bidirectional screw rod (82) is movably penetrated through the U-shaped plate (1) for installing the rotating wheel (83); A plurality of anti-skid sleeves (84) are sleeved on the outer side wall of the rotating wheel (83).

6. A cryogenic valve leak testing apparatus as defined in claim 5, wherein, The sealing mechanism (9) includes: Two outer sealing heads (90) are arranged on one side of the two moving plates (81); Two inner sealing heads (91) are arranged inside the two outer sealing heads (90).

7. A cryogenic valve leak testing apparatus as defined in claim 6, wherein, The sealing mechanism (9) further includes: Pipeline (92) is arranged on one of the two inner sealing heads (91) through the channel, and one end of the pipeline (92) is penetrated through one of the two moving plates (81) and is provided with an external thread; Sealing cover (93) is threadedly connected to one end of the pipeline (92).

8. The cryogenic valve leak testing apparatus of claim 1, wherein, Four supporting blocks (10) are fixedly installed at the bottom of the U-shaped plate (1), and the four supporting blocks (10) are distributed at the four corners of the bottom of the U-shaped plate (1).

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