A super-large caliber piston type regulating valve

Abstract

The utility model belongs to the technical field of governing valve, especially relates to a super large caliber piston type governing valve, including main valve body, auxiliary valve body and valve core chamber, auxiliary valve body connects on main valve body, valve core chamber installs in main valve body, still include: piston, removeable for controlling the intercommunication between main valve body and auxiliary valve body is arranged in the valve core chamber, squirrel cage assembly is connected on the piston for controlling the size of regulating flow, sealing ring is arranged between the piston and squirrel cage assembly, is provided with sealing slope and sealing lug on sealing ring, valve seat is arranged between main valve body and auxiliary valve body, is provided with contact conical surface and fixed recess, sealing element is arranged in fixed recess for and sealing lug abuts, actuating mechanism is used for controlling the piston to move, the utility model has the beneficial effects that the good sealing of governing valve closing is realized by using double sealing effect, even if the sealing ring wear failure at squirrel cage assembly, also need not worry that governing valve closing will take place fluid leakage situation.

Description

Technical Field

[0001] This utility model belongs to the field of regulating valve technology, and in particular relates to an ultra-large diameter piston-type regulating valve. Background Technology

[0002] In simple terms, a piston-type control valve is a core control device that precisely regulates the flow rate and pressure of fluid in a pipeline by using the axial movement of a cylindrical piston within the valve body. Currently, piston-type control valves often have a "squirrel cage" connected to the cylindrical piston. This "squirrel cage" structure effectively reduces pressure, absorbs energy, and suppresses harmful cavitation phenomena.

[0003] In the prior art, the sealing effect of most piston-type control valves is generally achieved by setting sealing rings on the outer wall of the piston and the outer wall of the squirrel cage. The sealing rings prevent fluid from flowing through the gap between the piston and the valve body and the gap between the squirrel cage and the valve body.

[0004] However, the axial reciprocating movement of the piston can easily cause wear on the sealing ring. Furthermore, when the regulating valve is opened, the high fluid pressure and flow direction can cause a significant impact on the sealing ring on the outer wall of the squirrel cage. This makes the sealing ring on the outer wall of the squirrel cage more prone to wear and failure, thus affecting the sealing performance when the regulating valve is closed. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned technical problems by providing an ultra-large diameter piston-type regulating valve, comprising a main valve body, a secondary valve body, and a valve core chamber. The secondary valve body is connected to the main valve body, and the valve core chamber is installed within the main valve body. The valve also includes: A piston is movably disposed within the valve core chamber to control the communication between the main valve body and the auxiliary valve body. The squirrel cage assembly is connected to the piston and is used to control and regulate the flow rate. A sealing ring is provided between the piston and the squirrel cage assembly, and the sealing ring is provided with a sealing bevel and a sealing protrusion; The valve seat is located between the main valve body and the auxiliary valve body, and the valve seat is provided with a contact cone surface and a fixing groove; A sealing element is provided in a fixed groove for abutting against a sealing protrusion; The actuator, mounted on the main valve body, is used to control the movement of the piston.

[0006] Furthermore, the seal includes: The deformation section has a ring-shaped structure and is hollow inside; Two lips are integrally connected to both sides of the deformed part along the radial direction, and a sealing groove is formed between the two lips; The sealing protrusion and the sealing groove are inserted and fitted together, and the end of the sealing protrusion and the deformed part abut against each other.

[0007] Furthermore, the seal also includes: Several positioning protrusions are respectively disposed on both sides of the deformed part along the radial direction.

[0008] Furthermore, the mouse cage assembly includes: The first sleeve has a flow channel. The second sleeve is rotatably and adjustablely disposed inside the first sleeve, and the first sleeve has several sets of flow holes. The flow channel is connected to one of the sets of flow holes.

[0009] Furthermore, the sealing ring is provided with an installation groove, and the inner wall of the installation groove is provided with positioning ribs; The first sleeve has a positioning groove that matches the positioning rib structure.

[0010] Furthermore, the first sleeve is provided with a positioning pin, and the second sleeve is provided with a positioning slot, with the positioning pin and the positioning slot being adapted to be inserted into each other.

[0011] The beneficial effects of this utility model are: The sealing bevel of the sealing ring abuts against the contact cone surface of the valve seat to achieve a hard seal, while the sealing protrusion inserts into the fixing groove and abuts against the sealing element to achieve a soft seal. This dual sealing action ensures a good seal when the control valve is closed. Even if the sealing ring at the squirrel cage assembly wears and fails, there is no need to worry about fluid leakage when the control valve is closed, thus improving operational safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial structural diagram of the regulating valve when it is closed in this utility model; Figure 3 This is a schematic diagram of the structure of the mouse cage assembly, piston, and sealing ring in this utility model; The markings in the diagram are as follows: 1. Main valve body; 2. Secondary valve body; 3. Valve core chamber; 4. Piston; 5. Squirrel cage assembly; 51. First sleeve; 52. Flow passage; 53. Second sleeve; 54. Flow hole; 55. Positioning pin; 56. Positioning slot; 6. Sealing ring; 61. Sealing bevel; 62. Sealing protrusion; 63. Positioning rib; 7. Valve seat; 71. Contact cone surface; 72. Fixing groove; 8. Seal; 81. Deformation part; 82. Lip; 83. Positioning protrusion; 9. Actuator. Detailed Implementation

[0013] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0014] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0015] Example 1:

[0016] This embodiment provides an ultra-large diameter piston-type regulating valve, including a main valve body 1, a secondary valve body 2, and a valve core chamber 3. The secondary valve body 2 is connected to the main valve body 1, and the valve core chamber 3 is installed inside the main valve body 1. It also includes: Piston 4 is movably disposed in valve core chamber 3 and is used to control the communication between main valve body 1 and auxiliary valve body 2; The squirrel cage assembly 5 is connected to the piston 4 and is used to control and adjust the flow rate. A sealing ring 6 is disposed between the piston 4 and the squirrel cage assembly 5. The sealing ring 6 is provided with a sealing bevel 61 and a sealing protrusion 62. Valve seat 7 is disposed between main valve body 1 and auxiliary valve body 2. Valve seat 7 is provided with contact cone surface 71 and fixing groove 72. The sealing element 8 is disposed in the fixing groove 72 and is used to abut against the sealing protrusion 62; Actuator 9 is mounted on the main valve body 1 and is used to control the movement of piston 4.

[0017] In this technical solution, the main valve body 1 is provided with an inlet and an outlet, the auxiliary valve body 2 is connected to the outlet by fasteners, and the valve seat 7 is provided between the main valve body 1 and the auxiliary valve body 2. The valve seat 7 is provided with a contact cone surface 71 and a fixing groove 72. A sealing element 8 is provided in the fixing groove 72. The sealing element 8 can be bonded to the fixing groove 72 with waterproof adhesive.

[0018] The piston 4 is axially movable within the valve core chamber 3 and connected to the drive end of the actuator 9. The actuator 9, in existing technology, typically consists of a valve shaft, crank, and connecting rod, and drives the piston 4 to reciprocate. A sealing ring 6 is fitted onto the end of the piston 4. The sealing ring 6 has a sealing bevel 61 that abuts against the contact cone surface 71, and is also connected to an integrally formed sealing protrusion 62. The squirrel cage assembly 5 is connected to the piston 4 by fasteners, which press the sealing ring 6 onto the piston 4, thus achieving the installation and fixation of the sealing ring 6.

[0019] When the control valve is closed, the sealing bevel 61 of the sealing ring 6 and the contact cone 71 of the valve seat 7 abut against each other to achieve a hard seal, while the sealing protrusion 62 inserts into the fixing groove 72 and abuts against the sealing element 8 to achieve a soft seal. This dual sealing action ensures a good seal when the control valve is closed. Even if the sealing ring at the squirrel cage assembly 5 wears and fails, there is no need to worry about fluid leakage when the control valve is closed, thus improving operational safety.

[0020] Example 2:

[0021] This embodiment provides an ultra-large diameter piston-type regulating valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0022] Furthermore, the seal 8 includes: Deformation part 81, the deformation part 81 is a ring structure and is hollow inside; Two lips 82 are integrally connected to the two radial sides of the deformable part 81, and a sealing groove is formed between the two lips 82. The sealing protrusion 62 and the sealing groove are inserted into each other, and the end of the sealing protrusion 62 abuts against the deformed part 81.

[0023] Through the above structural design, when the sealing protrusion 62 is inserted into the fixing groove 72, it will squeeze the deformation part 81. The deformation part 81 is hollow inside. The deformation part 81 is squeezed by the sealing protrusion 62 and undergoes concave deformation, thereby driving the two lips 82 to move towards the sealing protrusion 62. The two lips 82 clamp the two sides of the sealing protrusion 62. With the cooperation of the deformation part 81 and the sealing protrusion 62, a further seal is achieved, thereby effectively improving the sealing performance when the regulating valve is closed.

[0024] Furthermore, the seal 8 also includes a plurality of positioning protrusions 83, which are respectively disposed on both sides of the deformable portion 81 along the radial direction. Through this structural design, the plurality of positioning protrusions 83 can increase the contact area between the seal 8 and the fixing groove 72. Combined with the adhesive waterproof adhesive, this can effectively enhance the installation firmness of the seal 8 in the fixing groove 72 and prevent the seal 8 from falling out of the fixing groove 72 due to the impact of fluid.

[0025] Example 3:

[0026] This embodiment provides an ultra-large diameter piston-type regulating valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0027] Furthermore, the mouse cage assembly 5 includes: The first sleeve 51 has an overflow channel 52. The second sleeve 53 is rotatably and adjustablely disposed inside the first sleeve 51, and the first sleeve 51 is provided with a plurality of flow holes 54. The flow passage 52 is connected to one of the flow holes 54.

[0028] In this technical solution, the flow channel 52 consists of several oblong holes arranged in a ring array on the wall of the first sleeve 51. Several sets of flow holes 54 are formed on the wall of the second sleeve 53. Specifically, there can be three sets of flow holes 54, with the number of flow holes 54 in each set matching the number of oblong holes. The shape and area of ​​the three sets of flow holes 54 can be arranged in a progressively decreasing pattern, as shown in the figure. By rotating and adjusting the position of the second sleeve 53, the oblong holes of the second sleeve 53 and the flow holes 54 in different sets are kept in communication, thereby enabling more precise adjustment of the fluid flow rate through the squirrel cage, and thus achieving pressure relief control of the fluid.

[0029] Furthermore, the sealing ring 6 is provided with an installation groove, and the inner wall of the installation groove is provided with a positioning rib 63; the first sleeve 51 is provided with a positioning groove that matches the structure of the positioning rib 63. Through this structural design, the installation and connection of the first sleeve 51 can be positioned, making it convenient to set fasteners to install and fix the first sleeve 51 on the piston 4.

[0030] Furthermore, the first sleeve 51 is provided with positioning pins 55, and the second sleeve 53 is provided with positioning slots 56. The positioning pins 55 and positioning slots 56 are adapted to be inserted into each other. The number of positioning pins 55 is several and corresponds to the number of flow holes 54. The number of positioning slots 56 is the same as the number of positioning pins 55. Through this structural design, the connection and fixation between the first sleeve 51 and the second sleeve 53 are fixed, which facilitates the setting of fasteners to connect and fix the two. At the same time, it can also ensure that the flow holes 54 and the flow channels 52 are aligned and remain connected. The embodiments of this application have been described above with reference to the accompanying drawings. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many forms under the guidance of this application without departing from the spirit and scope of protection of the claims, and all of them are within the protection of this application.

Claims

1. A large-diameter piston-type regulating valve, comprising a main valve body (1), a secondary valve body (2), and a valve core chamber (3), wherein the secondary valve body (2) is connected to the main valve body (1), and the valve core chamber (3) is installed inside the main valve body (1), characterized in that, Also includes: Piston (4), which is movably disposed in valve core chamber (3) for controlling the communication between main valve body (1) and auxiliary valve body (2); A rat cage assembly (5) is connected to a piston (4) and is used to control and adjust the flow rate. A sealing ring (6) is disposed between the piston (4) and the cage assembly (5). The sealing ring (6) is provided with a sealing bevel (61) and a sealing protrusion (62). Valve seat (7), the valve seat (7) is disposed between the main valve body (1) and the auxiliary valve body (2), and the valve seat (7) is provided with a contact cone surface (71) and a fixing groove (72). A sealing element (8) is disposed in a fixing groove (72) for abutting against a sealing protrusion (62); The actuator (9) is mounted on the main valve body (1) and is used to control the piston (4) to move.

2. The ultra-large diameter piston-type regulating valve according to claim 1, characterized in that, The seal (8) includes: Deformation part (81), wherein the deformation part (81) is a ring structure and is hollow inside; Two lips (82) are integrally connected to the two radial sides of the deformable part (81), and a sealing groove is formed between the two lips (82); The sealing protrusion (62) and the sealing groove are inserted into each other, and the end of the sealing protrusion (62) and the deformed part (81) abut against each other.

3. The ultra-large diameter piston-type regulating valve according to claim 2, characterized in that, The seal (8) also includes: A plurality of positioning protrusions (83) are respectively disposed on both sides of the deformable part (81) along the radial direction.

4. The ultra-large diameter piston-type regulating valve according to claim 1, characterized in that, The rat cage assembly (5) includes: The first sleeve (51) has an overflow channel (52) on it. The second sleeve (53) is rotatably and adjustablely disposed inside the first sleeve (51), and the first sleeve (51) is provided with a plurality of flow holes (54). The flow channel (52) is connected to one of the flow holes (54).

5. The ultra-large diameter piston-type regulating valve according to claim 4, characterized in that, The sealing ring (6) is also provided with an installation groove, and the inner wall of the installation groove is provided with a positioning rib (63). The first sleeve (51) has a positioning groove that is compatible with the structure of the positioning rib (63).

6. The ultra-large diameter piston-type regulating valve according to claim 5, characterized in that, The first sleeve (51) is provided with a positioning pin (55), and the second sleeve (53) is provided with a positioning slot (56). The positioning pin (55) and the positioning slot (56) are adapted to be inserted into each other.

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