Gasification pressure regulating device for low-temperature liquid

Abstract

The utility model discloses a low-temperature liquid gasification pressure regulating device which comprises a storage tank and a conveying pipe, an injection pipe is arranged on the storage tank, and a pressure regulating mechanism is arranged between the injection pipe and the conveying pipe. The pressure regulating mechanism comprises a mounting sleeve, a rotating sleeve, a transmission rod, a transmission sleeve, a connecting sleeve, an elastic piece, an inner sleeve, an abutting ring, a threaded groove, a threaded sleeve and a positioning mechanism, the mounting sleeve is fixed to the top end of the injection pipe, the rotating sleeve rotates to the top end of the mounting sleeve and is connected with the conveying pipe, and the transmission rod is fixed to the inner side of the rotating sleeve and slides on the outer wall of the transmission rod; the pressure regulating mechanism is arranged between the injection pipe and the conveying pipe, the basic structure of the mounting sleeve and the rotating sleeve is matched with the transmission design of the transmission rod and the transmission sleeve, the connecting sleeve is precisely matched with the elastic piece, and the pressure regulation of the inner sleeve and the abutting ring is utilized, so that the precise control of the gas pressure is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to modern industrial production technical field, more specifically, it relates to a kind of gasification pressure regulating device of low temperature liquid. BACKGROUND

[0002] In modern industrial production and scientific research field, the gasification and pressure regulation of low temperature liquid (such as liquid nitrogen, liquid oxygen, etc.) is a crucial process, and the output pressure of these low temperature liquids needs to be accurately controlled after gasification to meet the specific needs of different application scenarios, such as semiconductor manufacturing, medical equipment, laboratory research, etc., which require stable and controllable gas pressure supply.

[0003] However, the gasification and pressure regulation equipment on the market has obvious shortcomings. In actual application, due to the lack of accurate pressure control mechanism, the gas pressure after gasification often fluctuates, which is difficult to maintain within the required stable range. At the same time, the pressure regulating device of the existing equipment has slow response speed, which cannot adapt to the pressure change in time, which not only affects the production efficiency, but also may cause the abnormal work of downstream equipment. In addition, the rough pressure regulation method also increases the safety hazard in the use process of the equipment, especially when dealing with flammable and explosive gas, a precise and reliable pressure control system is more needed. SUMMARY

[0004] (I) Technical problem solved

[0005] In view of the problems existing in the prior art, the utility model provides a kind of gasification pressure regulating device of low temperature liquid to solve the technical problems mentioned in the background art.

[0006] (II) Technical scheme

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a kind of gasification pressure regulating device of low temperature liquid, including storage tank and delivery pipe, the storage tank is equipped with injection pipe, regulating mechanism is arranged between the injection pipe and delivery pipe, the regulating mechanism includes mounting sleeve, rotating sleeve, transmission rod, transmission sleeve, connecting sleeve, elastic sheet, inner sleeve, abutment ring, screw groove, threaded sleeve and positioning mechanism, mounting sleeve is fixed at the top end of injection pipe, rotating sleeve rotates at the top end of mounting sleeve and is connected with delivery pipe, transmission rod is fixed in rotating sleeve inside, transmission sleeve slides on transmission rod outer wall, connecting sleeve is installed on transmission sleeve outside, elastic sheet is provided with multiple groups and is installed at the bottom end of connecting sleeve, inner sleeve is fixed at the outside of connecting sleeve, abutment ring is installed at the bottom end of mounting sleeve, screw groove is arranged at the outside of connecting sleeve, threaded sleeve is fixed in mounting sleeve inside, the positioning mechanism includes mounting ring, limit block, limit slot, reset spring and limit sleeve, mounting ring is arranged at the outside of mounting sleeve, limit block is provided with multiple groups and slides on mounting ring, limit slot is provided with multiple groups and is distributed on rotating sleeve outer wall, reset spring is connected at the outside of multiple limit blocks and is connected with mounting ring inner wall, limit sleeve slides on mounting sleeve outer wall.

[0008] The utility model further sets up, transmission rod is set to polygon and is connected with transmission sleeve sliding, through the polygon design of transmission rod and the sliding cooperation of transmission sleeve, ensure the synchronous rotation in transmission process, prevent skidding.

[0009] The utility model further sets up, the outside of inner sleeve is provided with polygon and is connected with mounting sleeve inner wall sliding, through the polygon design of the outside of inner sleeve and the sliding cooperation of mounting sleeve inner wall, realize stable linear motion, avoid rotation.

[0010] The utility model further sets up, the inside of abutment ring is set to arc and is abutted with the outer wall of multiple elastic sheets, through the arc inside of abutment ring and the fit of elastic sheet, realize uniform pressure distribution, improve pressure regulating precision.

[0011] The utility model further sets up, the outer wall of mounting sleeve is equipped with guide strip, the guide strip is provided with multiple groups and is connected with limit sleeve sliding, through the sliding cooperation of guide strip and limit sleeve, ensure the movement track of limit sleeve, improve positioning accuracy.

[0012] The utility model further sets up, the bottom end of transmission rod is equipped with limiting block, through the setting of limiting block, prevent transmission sleeve from separating from transmission rod, increase structural stability.

[0013] The utility model further sets up, and spring is connected between limit sleeve and mounting sleeve, through the elastic action of spring, limit sleeve keeps pre-tightening force, ensure positioning reliability.

[0014] The utility model further sets up, the spacing mechanism is arranged between the spacing sleeve and the mounting sleeve, the spacing mechanism includes support plate, spacing plate, rotating sleeve, unlocking sleeve and giving way slot, support plate is provided with multiple groups distribution in the spacing sleeve outer surface, spacing plate is provided with multiple groups respectively installs in multiple support plate inboard, rotating sleeve is rotatably installed in the mounting sleeve outer wall, unlocking sleeve is fixed in the rotating sleeve outer wall, and giving way slot is provided with multiple groups distribution in the unlocking sleeve outside.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the utility model provides a kind of low-temperature liquid gasification pressure regulating device, with following beneficial effects:

[0017] 1, by setting pressure regulating mechanism between injection pipe and delivery pipe, wherein the basic structure of mounting sleeve and rotating sleeve cooperates transmission rod, the transmission design of transmission sleeve, by the precision fit of connecting sleeve and elastic sheet, and utilize the pressure regulation of internal sleeve and abutment ring, the accurate control of gas pressure is realized.

[0018] 2, the positioning structure of mounting ring, limit block and limit slot in positioning mechanism is used, the elastic design of reset spring is combined, the reliable fixing of pressure regulating state is realized by the locking cooperation of spacing sleeve.

[0019] 3, and the setting of spacing mechanism provides double insurance function, by the support design of support plate and spacing plate, the flexible cooperation of rotating sleeve and unlocking sleeve is cooperated, and the reliability of positioning is further enhanced by the ingenious design of giving way slot, the stability of adjustment is improved, the practicability and reliability of low-temperature liquid gasification pressure regulating system are significantly improved, the problem of inaccurate pressure control of traditional gasification pressure regulating device is solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic drawing of a kind of low-temperature liquid gasification pressure regulating device in the utility model;

[0021] Figure 2 It is the structure schematic drawing of mounting sleeve in the utility model;

[0022] Figure 3 It is the sectional structure schematic drawing of pressure regulating mechanism in the utility model;

[0023] Figure 4 It is the sectional structure schematic drawing of positioning mechanism in the utility model;

[0024] Figure 5 It is the sectional structure schematic drawing of internal sleeve in the utility model.

[0025] In the figure: 1, storage tank; 2, conveying pipe; 3, injection pipe; 4, mounting sleeve; 5, rotating sleeve; 6, transmission rod; 7, transmission sleeve; 8, connecting sleeve; 9, elastic sheet; 10, inner sleeve; 11, abutting ring; 12, threaded groove; 13, threaded sleeve; 14, mounting ring; 15, limiting block; 16, limiting groove; 17, return spring; 18, limiting sleeve; 19, guide bar; 20, limiting block; 21, tension spring; 22, support plate; 23, limiting plate; 24, rotating sleeve; 25, unlocking sleeve; 26, clearance groove. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0028] In the present application, unless otherwise specified, the directions used such as "up, down" are generally with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for the convenience of understanding and description, "left, right" are generally with respect to the left and right shown in the drawings; "inner, outer" refer to the inner and outer with respect to the contour of each component itself, but the above directional words are not used to limit the present application.

[0029] Please refer to Figures 1-5 A low-temperature liquid gasification pressure regulating device, comprising a storage tank 1 and a conveying pipe 2, the storage tank 1 is provided with an injection pipe 3, a pressure regulating mechanism is arranged between the injection pipe 3 and the conveying pipe 2, the pressure regulating mechanism comprises a mounting sleeve 4, a rotating sleeve 5, a transmission rod 6, a transmission sleeve 7, a connecting sleeve 8, an elastic sheet 9, an inner sleeve 10, an abutting ring 11, a threaded groove 12, a threaded sleeve 13 and a positioning mechanism, the mounting sleeve 4 is fixed at the top end of the injection pipe 3, the rotating sleeve 5 is rotatable at the top end of the mounting sleeve 4 and is connected with the conveying pipe 2, the transmission rod 6 is fixed inside the rotating sleeve 5, the transmission sleeve 7 is slidable on the outer wall of the transmission rod 6, the connecting sleeve 8 is installed outside the transmission sleeve 7, the elastic sheet 9 is provided with multiple groups of mounting at the bottom end of the connecting sleeve 8, the inner sleeve 10 is fixed outside the connecting sleeve 8, the abutting ring 11 is installed at the bottom end of the mounting sleeve 4, the threaded groove 12 is arranged outside the connecting sleeve 8, the threaded sleeve 13 is fixed inside the mounting sleeve 4, and the positioning mechanism comprises a mounting ring 14, a limiting block 15, a limiting groove 16, a return spring 17 and a limiting sleeve 18, the mounting ring 14 is arranged outside the mounting sleeve 4, the limiting block 15 is provided with multiple groups of sliding on the mounting ring 14, the limiting groove 16 is provided with multiple groups of distributing on the outer wall of the rotating sleeve 5, the return spring 17 is connected outside the multiple groups of limiting blocks 15 and is connected with the inner wall of the mounting ring 14, and the limiting sleeve 18 is slidable on the outer wall of the mounting sleeve 4.

[0030] The transmission rod 6 is designed as a polygon and is slidably connected to the transmission sleeve 7. The polygonal structure enables the synchronous rotation of the transmission rod 6 and the transmission sleeve 7, preventing slippage caused by relative rotation.

[0031] The inner sleeve 10 has a polygonal shape on its outer side and is slidably connected to the inner wall of the mounting sleeve 4. The polygonal structure restricts the rotation of the inner sleeve 10, ensuring that it can only move in a straight line within the mounting sleeve 4.

[0032] The inner side of the abutment ring 11 is set in an arc shape and abuts against the outer wall of multiple sets of elastic sheets 9. The arc shape design allows the abutment ring 11 to evenly press the elastic sheets 9, achieving an average distribution of pressure.

[0033] The outer wall of the mounting sleeve 4 is provided with guide strips 15. Multiple sets of guide strips 15 are provided and are slidably connected to the limiting sleeve. The guiding effect of the guide strips 15 ensures that the limiting sleeve moves along the predetermined track.

[0034] A limiting block 16 is installed at the bottom of the transmission rod 6. The limiting block 16 serves to limit the movement and prevent the transmission sleeve 7 from falling off the transmission rod 6.

[0035] A tension spring 17 is provided between the limiting sleeve and the mounting sleeve 4. The tension spring 17 provides continuous tension so that the limiting sleeve is always kept in a pre-tight state with the mounting sleeve 4.

[0036] A limiting mechanism is provided between the limiting sleeve 18 and the mounting sleeve 4. The limiting mechanism includes a support plate 22, a limiting plate 23, a rotating sleeve 24, an unlocking sleeve 25, and a clearance groove 26. The support plate 22 is provided with multiple sets distributed on the outer surface of the limiting sleeve 18. The limiting plate 23 is provided with multiple sets respectively installed on the inner side of the multiple sets of support plates 22. The rotating sleeve 24 is rotatably installed on the outer wall of the mounting sleeve 4. The unlocking sleeve 25 is fixed on the outer wall of the rotating sleeve 24. The clearance groove 26 is provided with multiple sets distributed on the outer side of the unlocking sleeve 25.

[0037] In this embodiment, when adjustment is required, rotating the rotating sleeve 24 drives the unlocking sleeve 25 to rotate, causing multiple sets of clearance grooves 26 to move to the inside of multiple sets of limiting plates 23, releasing the limitation of the limiting sleeve 18. The tension spring 21 pulls the limiting sleeve 18 to release the contact with multiple sets of limiting blocks 15. The multiple sets of reset springs 17 pull the limiting blocks 15 away from the limiting grooves 16, releasing the positioning of the rotating sleeve 5. Rotating the rotating sleeve 5 drives the transmission rod 6 to rotate, the transmission rod 6 drives the transmission sleeve 7 to rotate, and the transmission sleeve 7 drives the connecting sleeve 8 to rotate. The connecting sleeve 8 is threaded with the threaded sleeve 13 through the threaded groove 12, thereby causing the connecting sleeve 8 to slide along the transmission rod 6 through the transmission sleeve 7 and change the degree of contact between the abutment ring 11 and multiple sets of elastic plates 9, changing the gap size between multiple sets of elastic plates 9, thereby changing the conveying range and adjusting the conveying air pressure.

[0038] More specifically, after the adjustment is completed, the limiting sleeve 18 is pushed against the top end of the plurality of limiting blocks 15 and stretches the tension spring 21, the limiting sleeve 18 pushes the plurality of limiting blocks 15 to be clamped in the limiting groove 16 and stretches the reset spring 17 respectively, limits the rotating sleeve 5, and then rotates the rotating sleeve 24 so that the limiting sleeve 18 is abutted between the plurality of limiting plates 23, and the limiting sleeve 18 is limited, thereby completing the limiting of the rotating sleeve 5.

[0039] In summary, when the overall device is in use or operation: when adjustment is needed, rotate the rotating sleeve 24 to drive the unlocking sleeve 25 to rotate, drive the plurality of displacement grooves 26 to move to the inside of the plurality of limiting plates 23, release the limiting of the limiting sleeve 18, pull the limiting sleeve 18 by the tension spring 21 to release the abutment of the plurality of limiting blocks 15, pull the limiting block 15 by the plurality of reset springs 17 to disengage from the limiting groove 16, release the positioning of the rotating sleeve 5, rotate the rotating sleeve 5 to drive the transmission rod 6 to rotate, the transmission rod 6 drives the transmission sleeve 7 to rotate, the transmission sleeve 7 drives the connecting sleeve 8 to rotate and threadedly engages with the threaded sleeve 13 through the threaded groove 12, thereby driving the connecting sleeve 8 to slide along the transmission rod 6 through the transmission sleeve 7 and changing the abutment degree of the abutment ring 11 to the plurality of elastic sheets 9, changing the gap size between the plurality of elastic sheets 9, thereby changing the conveying range and adjusting the conveying air pressure.

[0040] After the adjustment is completed, the limiting sleeve 18 is pushed against the top end of the plurality of limiting blocks 15 and stretches the tension spring 21, the limiting sleeve 18 pushes the plurality of limiting blocks 15 to be clamped in the limiting groove 16 and stretches the reset spring 17 respectively, limits the rotating sleeve 5, and then rotates the rotating sleeve 24 so that the limiting sleeve 18 is abutted between the plurality of limiting plates 23, and the limiting sleeve 18 is limited, thereby completing the limiting of the rotating sleeve 5.

[0041] In all the above-mentioned schemes, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be described one by one here. In the above, whenever there is a fixed connection, welding is preferred. Although embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A vaporization and pressure regulating device for cryogenic liquids, comprising a storage tank (1) and a delivery pipe (2), characterized in that, The storage tank (1) is provided with an injection pipe (3). A pressure regulating mechanism is provided between the injection pipe (3) and the delivery pipe (2). The pressure regulating mechanism includes an installation sleeve (4), a rotating sleeve (5), a transmission rod (6), a transmission sleeve (7), a connecting sleeve (8), an elastic plate (9), an inner sleeve (10), an abutment ring (11), a threaded groove (12), a threaded sleeve (13), and a positioning mechanism. The installation sleeve (4) is fixed to the top of the injection pipe (3). The rotating sleeve (5) rotates at the top of the installation sleeve (4) and is connected to the delivery pipe (2). The transmission rod (6) is fixed inside the rotating sleeve (5). The transmission sleeve (7) slides on the outer wall of the transmission rod (6). The connecting sleeve (8) is installed on the outside of the transmission sleeve (7). The elastic plate (9) is provided with multiple sets installed on the connecting sleeve (8). At the bottom end, the inner sleeve (10) is fixed to the outside of the connecting sleeve (8), the abutment ring (11) is installed at the bottom end of the mounting sleeve (4), the threaded groove (12) is set on the outside of the connecting sleeve (8), and the threaded sleeve (13) is fixed on the inside of the mounting sleeve (4). The positioning mechanism includes a mounting ring (14), a limiting block (15), a limiting groove (16), a return spring (17), and a limiting sleeve (18). The mounting ring (14) is set on the outside of the mounting sleeve (4), the limiting block (15) is provided with multiple sets that slide on the mounting ring (14), the limiting groove (16) is provided with multiple sets that are distributed on the outer wall of the rotating sleeve (5), the return spring (17) is connected to the outside of multiple sets of limiting blocks (15) and connected to the inner wall of the mounting ring (14), and the limiting sleeve (18) slides on the outer wall of the mounting sleeve (4).

2. The vaporization and pressure regulating device for cryogenic liquids according to claim 1, characterized in that: The transmission rod (6) is polygonal and slidably connected to the transmission sleeve (7).

3. The vaporization and pressure regulating device for cryogenic liquids according to claim 2, characterized in that: The outer side of the inner sleeve (10) is provided with a polygon and is slidably connected to the inner wall of the mounting sleeve (4).

4. The vaporization and pressure regulating device for cryogenic liquids according to claim 3, characterized in that: The inner side of the abutment ring (11) is set in an arc shape and abuts against the outer wall of multiple sets of elastic sheets (9).

5. The vaporization and pressure regulating device for cryogenic liquid according to claim 4, characterized in that: The outer wall of the mounting sleeve (4) is provided with guide strips (19), and multiple sets of guide strips (19) are provided and are slidably connected to the limiting sleeve (18).

6. The vaporization and pressure regulating device for cryogenic liquid according to claim 5, characterized in that: A limiting block (20) is installed at the bottom end of the transmission rod (6).

7. The vaporization and pressure regulating device for cryogenic liquids according to claim 6, characterized in that: A tension spring (21) is provided between the limiting sleeve (18) and the mounting sleeve (4).

8. The vaporization and pressure regulating device for cryogenic liquids according to claim 7, characterized in that: A limiting mechanism is provided between the limiting sleeve (18) and the mounting sleeve (4). The limiting mechanism includes a support plate (22), a limiting plate (23), a rotating sleeve (24), an unlocking sleeve (25), and a clearance groove (26). The support plate (22) is provided with multiple sets distributed on the outer surface of the limiting sleeve (18). The limiting plate (23) is provided with multiple sets respectively installed on the inner side of multiple sets of support plates (22). The rotating sleeve (24) is rotatably installed on the outer wall of the mounting sleeve (4). The unlocking sleeve (25) is fixed on the outer wall of the rotating sleeve (24). The clearance groove (26) is provided with multiple sets distributed on the outer side of the unlocking sleeve (25).

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