Pressure regulator spring mounting device and axial flow type pressure regulator

Abstract

According to the pressure regulator spring installation device and the axial flow type pressure regulator, a base, an outlet valve disc, a leather film valve cylinder assembly, an inlet valve disc, a spring, an inlet flange, a pressing disc, a thrust bearing and a hand wheel are sequentially arranged from bottom to top and arranged on a screw rod in a sleeving mode to be vertically placed, and it is guaranteed that the center of the spring, the center of the inlet flange and the center of the pressure regulator are coaxial; the hand wheel is rotated to press the pressing disc to move downwards, the spring is gradually pressed, in order to prevent the situation that the friction force between the hand wheel and the pressing disc is too large in the rotating and pressing process of the hand wheel, and consequently the inlet flange and the spring rotate in a follow-up mode, the thrust bearing is arranged between the hand wheel and the pressing disc, and the friction force between the hand wheel and the pressing disc can be eliminated; and after the spring and the inlet flange are in place, the base is disassembled, the outlet flange is installed at the bottom of the outlet valve disc, and installation of the spring of the axial-flow type pressure regulator is completed, the spring in the large-drift-diameter axial-flow type pressure regulator can be disassembled and reinstalled, the structure is simple, operation is easy and convenient, and time and labor are saved.

Description

Technical Field

[0001] The present application relates to the field of spring installation, and in particular to a voltage regulator spring installation device and an axial flow voltage regulator. Background Art

[0002] In the field of gas transmission and distribution, gas pressure regulators play the role of pressure regulation and stabilization and are important key equipment. Among them, axial flow pressure regulators have been widely used due to their simple structure, excellent pressure regulation performance and large flow capacity.

[0003] A spring is an important component of the axial flow voltage regulator, which is generally limited by the housing and internal components. During installation, the spring is compressed by pressing the housing. For a small-diameter axial flow voltage regulator, the spring size is small, and the spring can be compressed and installed by a single person.

[0004] For large-diameter axial-flow regulators, the size of the spring increases accordingly, and the elastic force increases significantly. For example, for a DN100 axial-flow regulator, the free length of the spring is 420mm, and after being compressed, its elastic force can reach 1kN, which is equivalent to the gravity of a 100kg object. When the spring is compressed, the position is unstable and the elastic force is too large. Obviously, it is impossible for ordinary people to install it alone. Special large-scale equipment or multiple people need to be used to complete the installation.

[0005] For production units, large-diameter axial-flow voltage regulators are generally produced in small batches, and the introduction of special large-scale installation equipment obviously has the problem of low cost-effectiveness; for maintenance units, the voltage regulators are generally disassembled, repaired and reinstalled at the equipment use site. It is impossible to carry large equipment, and it is difficult for one or two people to complete the reinstallation of large-diameter axial-flow voltage regulators. Utility Model Content

[0006] In view of this, the present application proposes a voltage regulator spring installation device and an axial flow voltage regulator, which can solve the disassembly and reinstallation of the spring in a large-diameter axial flow voltage regulator. It has a simple structure and is easy and convenient to operate, saving time and effort.

[0007] According to one aspect of the present application, a voltage regulator spring mounting device is provided, comprising: a base, a screw rod, a clamping plate, a thrust bearing and a hand wheel.

[0008] The screw is a long rod-shaped structure, and a threaded structure is provided on its outer ring; the base is arranged at the bottom of the screw, and the base is suitable for being arranged at the bottom of the voltage regulator. The base is a cover-shaped structure with an opening on the upper part, and a threaded structure matching the screw is provided on the base; the pressure plate is arranged at the top of the base, and the pressure plate is suitable for being arranged at the top of the voltage regulator, and a through hole is opened in the center, and the screw is arranged through the through hole; the thrust bearing is embedded in the top of the pressure plate, and the top of the thrust bearing is higher than the top of the pressure plate; the handwheel is arranged at the top of the thrust bearing, and the handwheel is threadedly connected to the screw.

[0009] In one possible implementation, the base is an integrally formed, central-axis symmetrical structure, wherein the central axis of the base coincides with the central axis of the screw; the base is stepped, wherein the opening diameter of the inner top is larger than the opening diameter of the inner bottom; a mounting ear is protruding from the top of the outer ring of the base, and the mounting ear is suitable for fixed connection with the voltage regulator; the bottom center position of the base is elevated, and the bottom of the screw is threadedly connected to the elevated position.

[0010] In one possible implementation, the top of the mounting ear is recessed downward near the inner position to provide a positioning step, the bottom of the recess is tilted upward from the inside to the outside, and the positioning step is suitable for matching with the voltage regulator; the number of the mounting ears is four, each of the mounting ears is provided with a mounting hole, and the mounting hole is provided in the recessed position.

[0011] In one possible implementation, the through hole is a light hole; the pressure plate and the screw are fitted together and extend downward in a circle, the top view of the pressure plate is a circular structure, and the central axis of the pressure plate coincides with the central axis of the screw; two inner holes are provided at the downward extending position of the pressure plate, and the connecting line of the two inner holes intersects with the central axis of the pressure plate.

[0012] In one possible implementation, the handwheel is a flat cylindrical structure with a diameter larger than the diameter of the pressure plate, and the central axis of the handwheel is arranged to coincide with the central axis of the screw; three gripping holes are provided on the handwheel, and the three gripping holes are of the same size; the center of the handwheel is a hexagonal prism, and the bottom surface of the hexagonal prism is smaller than the top surface of the thrust bearing.

[0013] According to another aspect of the present application, an axial flow pressure regulator is provided, which completes the installation of the spring in the pressure regulator by using the spring installation device described in any one of the above claims, comprising: a diaphragm valve cartridge assembly, an inlet valve disc, an outlet valve disc, the spring and an inlet flange; the diaphragm valve cartridge assembly is arranged between the inlet valve disc and the outlet valve disc, the inlet valve disc is provided with an opening, the bottom of the spring is arranged on the diaphragm valve cartridge assembly, and the top of the spring is provided with the inlet flange; the screw passes through the diaphragm valve cartridge assembly, the inlet valve disc, the outlet valve disc, the spring and the inlet flange; the base is arranged at the bottom of the diaphragm valve cartridge assembly, and the clamping plate is arranged at the top of the inlet flange.

[0014] In one possible implementation, the base and the outlet flange valve disc are connected by screws, the number of the screws is the same as the number of the mounting ears, the screws are arranged inward and upward, and the screws pass through the mounting holes and are fixed to the outlet flange.

[0015] In a possible implementation, the bottom of the diaphragm valve cartridge assembly passes through the outlet valve disc, and there is a preset distance between the bottom of the diaphragm valve cartridge assembly and the step in the base.

[0016] In one possible implementation, the top diameter of the pressure plate is larger than the top opening of the inlet flange, and the diameter of the bottom extension position of the pressure plate is smaller than the top opening diameter of the inlet flange; a positioning step is provided at the contact position between the pressure plate and the inlet flange, and the positioning step is provided in a circle along the outer circumference of the pressure plate.

[0017] In a possible implementation, a straight rod is laterally disposed near the top of the inlet flange, one end of the straight rod is connected to the inlet flange, and the other end is inserted into the inner hole on the pressure plate.

[0018] The beneficial effects of the present application are as follows: the base, outlet valve disc, diaphragm valve cylinder assembly, inlet valve disc, spring, inlet flange, clamping plate, thrust bearing and handwheel are arranged in sequence from bottom to top, and are placed vertically on the screw to ensure that the centers of the spring, inlet flange and pressure regulator are coaxial. The clamping plate is pressed downward by rotating the handwheel to gradually compress the spring. In order to prevent excessive friction between the clamping plate and the handwheel during rotating and clamping, which causes the inlet flange and spring to rotate with the handwheel, a thrust bearing is arranged between the handwheel and the clamping plate to eliminate the friction between the two. After the spring and the inlet flange are in place, the base is removed and the outlet flange is installed on the bottom of the outlet valve disc to complete the installation of the axial flow pressure regulator spring. A pressure regulator spring installation device and an axial flow pressure regulator according to the present application can solve the problem of disassembly and reinstallation of the spring in a large-diameter axial flow pressure regulator. It has a simple structure and is easy and convenient to operate, saving time and effort.

[0019] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0021] Figure 1 A schematic diagram showing the cross-sectional structure of a voltage regulator spring installation device and an axial flow voltage regulator in use according to an embodiment of the present application;

[0022] Figure 2 A main structural diagram showing a voltage regulator spring installation device according to an embodiment of the present application;

[0023] Figure 3 A schematic cross-sectional structure diagram of an axial flow voltage regulator according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0024] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0025] Among them, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0028] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0029] A device for installing a voltage regulator spring 5 includes: a base 12, a screw rod 8, a clamping plate 11, a thrust bearing 9 and a hand wheel 10. The screw rod 8 is a long rod-shaped structure, and a threaded structure is arranged on its outer ring; the base 12 is arranged at the bottom of the screw rod 8, and the base 12 is suitable for being arranged at the bottom of the voltage regulator. The base 12 is a cover-shaped structure with an opening facing upward, and a threaded structure matching the screw rod 8 is arranged on the base 12; the clamping plate 11 is arranged at the top of the base 12, and the clamping plate 11 is suitable for being arranged at the top of the voltage regulator, and a through hole is opened in the center, and the screw rod 8 is arranged through the through hole; the thrust bearing 9 is embedded in the top of the clamping plate 11, and the thrust bearing 9 protrudes and is arranged on the top of the clamping plate 11; the hand wheel 10 is arranged at the top of the thrust bearing 9, and a threaded structure matching the screw rod 8 is arranged on the hand wheel 10.

[0030] After the pressure regulator assembles the inlet valve disc 3, the outlet valve disc 6, and the diaphragm valve cylinder assembly 2 into one body, install the base 12 on the outlet valve disc 6 of the pressure regulator, place the whole body vertically, screw the screw 8 into the base 12, and then insert the spring 5, the inlet flange 4, and the clamping plate 11 into the screw 8 for positioning, and press the clamping plate 11 downward by rotating the hand wheel 10, while ensuring that the spring 5 and the inlet flange 4 are always coaxial with the center of the pressure regulator, gradually compress the spring 5, insert the screw 13 to tighten it after it is tightened into place, then unscrew the screw 8, remove the base 12, and install the subsequent valve seat assembly 7 and the outlet flange 1.

[0031] In order to prevent excessive friction between the handwheel 10 and the clamping plate 11 during the rotation and clamping process, which causes the inlet flange 4 and the spring 5 to rotate with the handwheel 10, a thrust bearing 9 is provided in the handwheel 10 and the clamping plate 11 to eliminate the friction between the two and ensure that the inlet flange 4 and the spring 5 do not rotate with the handwheel 10.

[0032] In one possible implementation, the base 12 is an integrally formed structure with a central axis symmetrical structure, and the central axis of the base 12 is arranged to coincide with the central axis of the screw 8; the base 12 is double-stepped, and the opening diameter of the inner top is larger than the opening diameter of the inner bottom; the outer ring top of the base 12 is protruding with a mounting ear, and the mounting ear is suitable for fixed connection with the voltage regulator; the bottom center position of the base 12 is elevated, and the bottom of the screw 8 is threadedly connected to the elevated position.

[0033] In one possible implementation, the top of the mounting ear is recessed downward near the inner position to provide a positioning step, and the bottom of the recess is inclined upward from the inside to the outside, and the positioning step is suitable for matching with a voltage regulator; there are four mounting ears, each of which is provided with a mounting hole, and the mounting hole is provided in the recessed position.

[0034] The base 12 can be processed as a whole or by welding the tube sheet and then processing it. The center of the base 12 is processed with an internal thread to install the screw 8. Figure 1 The position E shown is a light hole, which prevents the internal thread from being too long to be convenient for installing the screw rod 8, and at the same time provides guidance and positioning for the screw rod 8.

[0035] The base 12 is provided with mounting holes around it, and the base 12 and the outlet valve disc 6 can be connected and fastened by inserting screws 13 to ensure safety. At the same time, positioning steps are provided such as Figure 1 As shown at D, ensure that the seat 12 is coaxial with the outlet valve disc 6.

[0036] After the screw rod 8 is screwed into the base 12, the spring 5, the inlet flange 4 and the clamping plate 11 are sequentially inserted into the screw rod 8. A flat platform is processed at the top of the screw rod 8 to facilitate the operation with a wrench.

[0037] In one possible implementation, the through hole is a light hole; the pressure plate 11 and the screw rod 8 are fitted together and extend downward in a circle, the top view of the pressure plate 11 is a circular structure, and the central axis of the pressure plate 11 coincides with the central axis of the screw rod 8; two inner holes are provided at the downward extending position of the pressure plate 11, and the connecting line of the two inner holes intersects with the central axis of the pressure plate 11.

[0038] The spring 5 is positioned by the inlet flange 4 and the diaphragm valve cartridge assembly 2, and the inlet flange 4 and the clamping plate 11 are coaxial through the positioning step of the clamping plate 11. Figure 1 As shown at C. The inner hole of the clamping plate 11 is a light hole, through which the screw 8 passes, and the inner hole is used to achieve positioning and ensure that the clamping plate 11 is concentric with the screw 8, as shown in FIG. Figure 1 As shown at B.

[0039] In one possible implementation, the handwheel 10 is a flat cylindrical structure with a diameter greater than the diameter of the pressure plate 11, and the central axis of the handwheel 10 is arranged to coincide with the central axis of the screw 8; three gripping holes are opened on the handwheel 10, and the three gripping holes are of the same size; the center of the handwheel 10 is a hexagonal prism, and the bottom surface of the hexagonal prism is smaller than the top surface of the thrust bearing 9.

[0040] The hand wheel 10 has an internal thread at the center, which can be screwed into the screw rod 8, and drives the inlet flange 4 to compress the spring 5 through the thrust bearing 9 between the clamping hand wheel 10 and the clamping plate 11.

[0041] The thrust bearing 9 disposed between the hand wheel 10 and the clamping plate 11 can effectively prevent the clamping plate 11 and the inlet flange 4 from rotating with the friction force generated when the hand wheel 10 is tightened.

[0042] An axial flow pressure regulator, which uses the spring 5 installation device of any one of the above claims to complete the installation of the spring 5 in the pressure regulator, comprising: a diaphragm valve cartridge assembly 2, an inlet valve disc 3, an outlet valve disc 6, a spring 5 and an inlet flange 4; the diaphragm valve cartridge assembly 2 is arranged between the inlet valve disc 3 and the outlet valve disc 6, the inlet valve disc 3 is provided with an opening, the bottom of the spring 5 is arranged on the diaphragm valve cartridge assembly 2, and the top of the spring 5 is provided with the inlet flange 4; the screw 8 passes through the diaphragm valve cartridge assembly 2, the inlet valve disc 3, the outlet valve disc 6, the spring 5 and the inlet flange 4; the base 12 is arranged at the bottom of the diaphragm valve cartridge assembly 2, and the clamping plate 11 is arranged at the top of the inlet flange 4. The spring 5 is located between the inlet flange 4 and the diaphragm valve cartridge assembly 2, and is positioned by the two. When the whole is installed, the inlet flange 4 is pressed to compress the spring 5, and the inlet flange 4 is inserted into the diaphragm valve cartridge assembly 2. After being pressed into place, the screw 13 is inserted to connect and tighten the inlet flange 4 and the inlet valve disc 3.

[0043] In one possible implementation, the base 12 and the valve disc of the outlet flange 1 are connected by screws 13 , the number of screws 13 is the same as the number of mounting ears, the screws 13 are arranged inwardly and upwardly, and the screws 13 pass through the mounting holes and are fixed to the outlet flange 1 .

[0044] In a possible implementation, the bottom of the diaphragm valve cartridge assembly 2 passes through the outlet valve disc 6 , and there is a preset distance between the bottom of the diaphragm valve cartridge assembly 2 and the step in the base 12 .

[0045] In one possible implementation, the top diameter of the pressure plate 11 is larger than the top opening of the inlet flange 4, and the diameter of the bottom extension position of the pressure plate 11 is smaller than the top opening diameter of the inlet flange 4; a positioning step is provided at the contact position between the pressure plate 11 and the inlet flange 4, and the positioning step is provided in a circle along the outer circumference of the pressure plate 11.

[0046] In a possible implementation, a straight rod is laterally disposed near the top of the inlet flange 4 , one end of the straight rod is connected to the inlet flange 4 , and the other end is inserted into the inner hole of the pressure plate 11 .

[0047] The device has the following advantages and positive effects: (1) The device has a simple structure, is easy to process, has a low overall cost, and has a high time-efficiency and cost-effectiveness for small-batch production of large-diameter axial flow regulators; (2) The device is easy to install and simple to operate, and can be operated by one person, reducing manpower requirements; (3) The device inserts the spring 5 therein, and even if the spring 5 becomes unstable, it cannot fly out and injure people, thus having high safety; (4) The device is easy to disassemble, easy to carry, and easy to use and operate at the equipment maintenance site.

[0048] It should be noted that although the present application introduces a voltage regulator spring mounting device and an axial flow voltage regulator as an example, those skilled in the art will appreciate that the present application should not be limited thereto. In fact, the user can flexibly set various parameters according to personal preferences and / or actual application scenarios, as long as the design is reasonable.

[0049] In this way, the base, outlet valve disc, diaphragm valve cylinder assembly, inlet valve disc, spring, inlet flange, clamping plate, thrust bearing and handwheel are arranged in sequence from bottom to top, and are placed vertically on the screw to ensure that the centers of the spring, inlet flange and pressure regulator are coaxial. The clamping plate is pressed downward by rotating the handwheel to gradually compress the spring. In order to prevent excessive friction between the clamping plate and the handwheel during rotation and compression, which causes the inlet flange and spring to rotate with the handwheel, a thrust bearing is arranged between the handwheel and the clamping plate to eliminate the friction between the two. After the spring and the inlet flange are in place, the base is removed and the outlet flange is installed on the bottom of the outlet valve disc to complete the installation of the axial flow pressure regulator spring. A pressure regulator spring installation device and an axial flow pressure regulator according to the present application can solve the problem of disassembly and reinstallation of the spring in a large-diameter axial flow pressure regulator. It has a simple structure and is easy and convenient to operate, saving time and effort.

[0050] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A voltage regulator spring mounting device, characterized in that: include: Base, screw, hold-down plate, thrust bearing and handwheel; The screw is a long rod-shaped structure, and its outer ring is provided with a thread structure; The base is arranged at the bottom of the screw rod, and the base is suitable for being arranged at the bottom of the voltage regulator. The base is a cover-shaped structure with an opening at the top, and a thread structure matching the screw rod is arranged on the base; The pressing plate is arranged on the top of the base, and the pressing plate is suitable for being arranged on the top of the voltage regulator, and a through hole is opened in the center thereof, and the screw rod is arranged through the through hole; The thrust bearing is embedded in the top of the pressing plate, and the top of the thrust bearing is higher than the top of the pressing plate; The hand wheel is arranged on the top of the thrust bearing, and the hand wheel is threadedly connected with the screw rod.

2. The spring mounting device according to claim 1, characterized in that: The base is an integrally formed structure with a central axis symmetrical, and the central axis of the base coincides with the central axis of the screw; The base is stepped inside, and the opening diameter of the inner top is larger than the opening diameter of the inner bottom; The top of the outer ring of the base is protruding with a mounting ear, and the mounting ear is suitable for fixed connection with the voltage regulator; The bottom center position of the base is elevated, and the bottom of the screw rod is threadedly connected to the elevated position.

3. The spring mounting device according to claim 2, characterized in that: The top of the mounting ear is concave downward near the inner side to provide a positioning step, the bottom of the concave is inclined upward from the inside to the outside, and the positioning step is suitable for matching with the voltage regulator; The number of the mounting ears is four, each of the mounting ears is provided with a mounting hole, and the mounting hole is arranged in a recessed position.

4. The spring mounting device according to claim 1, characterized in that: The through hole is a light hole; The circle of the pressing plate that fits the screw rod extends downward, the top view of the pressing plate is a circular structure, and the central axis of the pressing plate coincides with the central axis of the screw rod; Two inner holes are arranged at the downwardly extending position of the clamping disk, and a connecting line of the two inner holes intersects with the central axis of the clamping disk.

5. The spring mounting device according to claim 1, characterized in that: The hand wheel is a flat cylindrical structure, the diameter of which is larger than the diameter of the pressing plate, and the central axis of the hand wheel is arranged to coincide with the central axis of the screw; The hand wheel is provided with three gripping holes, and the three gripping holes are of the same size; The center of the hand wheel is a hexagonal prism, and the size of the bottom surface of the hexagonal prism is smaller than the size of the top surface of the thrust bearing.

6. An axial flow voltage regulator, characterized in that: The spring in the pressure regulator is installed by using the spring installation device according to any one of claims 1 to 5, comprising: a diaphragm valve cartridge assembly, an inlet valve disc, an outlet valve disc, the spring and an inlet flange; The diaphragm valve cartridge assembly is arranged between the inlet valve disc and the outlet valve disc, the inlet valve disc is provided with an opening, the bottom of the spring is arranged on the diaphragm valve cartridge assembly, and the top of the spring is provided with the inlet flange; The screw is arranged through the diaphragm valve cylinder assembly, the inlet valve disc, the outlet valve disc, the spring and the inlet flange; The base is arranged at the bottom of the diaphragm valve cylinder assembly, and the clamping plate is arranged at the top of the inlet flange.

7. The axial flow voltage regulator according to claim 6, characterized in that: The bottom of the diaphragm valve cartridge assembly passes through the outlet valve disc, and a preset distance is provided between the bottom of the diaphragm valve cartridge assembly and the step in the base.

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