A high temperature and high pressure forged steel zero leakage ball valve

Abstract

The present invention discloses a high-temperature and high-pressure forged steel zero-leakage ball valve, which relates to the technical field of ball valves and includes a valve seat, a valve core, a valve stem, and a sealing ring. The sealing ring is arranged between the valve seat and the valve core, and further includes a reinforcing seal. The reinforcing seal is movably arranged between the sealing ring and the valve seat. An extension section is provided at the inlet and outlet ports of the valve core, wherein the reinforcing seal includes a pressure section, a connecting section, and an abutting section. The pressure section abuts against the outer wall of the extension section. The pressure section is connected to the abutting section through the connecting section, and the abutting section abuts against the outer wall of the sealing ring. The present invention achieves a double tightening seal of the sealing ring by arranging a reinforcing seal and a secondary reinforcing member outside the sealing ring and utilizing the water pressure formed by the naturally flowing liquid, thereby greatly improving the sealing effect of the ball valve and achieving a zero-leakage ball valve effect.

Description

Technical Field

[0001] The present invention relates to the technical field of ball valves, and more particularly to a high-temperature and high-pressure forged steel zero-leakage ball valve. Background Art

[0002] Industrial and civil infrastructure often utilize pipelines to transport media. Pressure or temperature fluctuations often require adjustments to the pipelines. To regulate flow, regulating mechanisms, particularly ball valves, are used to ensure optimal operating conditions and environmental safety. Ball valves typically utilize a sphere with a circular channel as the opening and closing element, which opens and closes as the valve body rotates. Ball valves offer advantages such as low fluid resistance, simple structure, tight and reliable operation, easy operation, rapid opening and closing, and a wide range of applications. They are widely used in various sectors, including the petroleum, chemical, power generation, papermaking, atomic energy, aviation, and rocketry, as well as in our daily lives.

[0003] However, when the existing ball valve is in use, a sealing ring is usually provided at the connection between the ball valve and the valve seat to prevent leakage. However, the sealing method of the single-layer sealing ring has poor sealing performance. Once the sealing ring is damaged, the ball valve will leak liquid.

[0004] In view of the above problems, the present invention proposes a high-temperature and high-pressure forged steel zero-leakage ball valve which can significantly improve the sealing effect. Summary of the Invention

[0005] In order to solve this problem in practical application, the present invention aims to propose a high-temperature and high-pressure forged steel zero-leakage ball valve. The specific solution is as follows:

[0006] A high-temperature and high-pressure forged steel zero-leakage ball valve, comprising a valve seat, a valve core, a valve stem and a sealing ring, wherein the sealing ring is arranged between the valve seat and the valve core, and further comprising a reinforcing seal, wherein the reinforcing seal is movably arranged between the sealing ring and the valve seat, and an extension section is provided at the inlet and outlet ports of the valve core, wherein:

[0007] The reinforced seal includes a pressure section, a connecting section and an abutting section. The pressure section abuts against the outer wall of the extension section. The pressure section is connected to the abutting section through the connecting section. The abutting section abuts against the outer wall of the sealing ring.

[0008] Furthermore, it also includes a secondary reinforcement member, which is installed on the valve seat. The secondary reinforcement member includes a pressure ring, an abutment ring and a reinforcement ring. The pressure ring is installed on the valve seat, the inner end of the pressure ring extends into the valve seat channel, and the outer end is connected to the abutment ring. One end of the reinforcement ring abuts the abutment ring, and the other end abuts the abutment section.

[0009] Furthermore, the extension section is configured as an arc-shaped structure, and the curvature of the arc-shaped structure matches the surface curvature of the ball valve;

[0010] The pressure section is configured as an arc-shaped structure matching the extension section.

[0011] Furthermore, the length of the extension section is not greater than the length of the compression section.

[0012] Furthermore, the extension section and the valve core are connected to form an integrated structure.

[0013] Furthermore, the reinforcement ring includes a front section, a middle section and a terminal section connected into an integral structure, the front section abuts the abutting ring, the front section is connected to the terminal section through the middle section, and the terminal section and the middle section are combined to form a ring structure with a T-shaped cross-section.

[0014] Furthermore, the distance between the inner side surface of the pressure ring and the bottom surface of the valve seat is smaller than the distance between the inner side surface of the reinforced sealing component and the bottom surface of the valve seat.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) By setting up a reinforced seal, the water pressure flowing naturally into the ball valve is used to tighten and squeeze the seal ring, thereby improving the sealing between the seal ring and the valve core, and preliminarily achieving zero leakage of the ball valve and avoiding leakage;

[0017] (2) By setting up a secondary reinforcement, the water pressure flowing naturally into the ball valve is also used to tighten and squeeze the sealing ring for a second time, thereby improving the sealing between the sealing ring and the valve core for a second time. In combination with the reinforcement seal, the double tightening of the ball valve sealing ring is achieved, further strengthening the sealing effect and realizing a zero-leakage ball valve.

[0018] (3) The entire ball valve utilizes the water pressure energy of natural flow to improve the sealing performance of the ball valve and make full use of energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an overall schematic diagram of an embodiment of the present invention;

[0020] Figure 2 For the present invention Figure 1 A partial enlarged view of point A in the middle.

[0021] Figure numerals: 1. valve seat; 2. valve core; 3. valve stem; 4. sealing ring; 5. extension section; 6. reinforced sealing member; 61. pressure section; 62. connecting section; 633. abutting section; 7. secondary reinforcement member; 71. pressure ring; 72. abutting ring; 73. reinforcement ring; 731. front section; 732. middle section; 733. end section. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] Example 1

[0025] like Figure 1-2 As shown, a high-temperature, high-pressure forged steel zero-leakage ball valve includes a valve seat 1, a valve core 2, a valve stem 3, and a sealing ring 4. The sealing ring 4 is disposed between the valve seat 1 and the valve core 2. The sealing ring 4 ensures a preliminary seal between the valve core 2 and the valve seat 1 to initially prevent leakage of the ball valve.

[0026] In order to further improve the anti-leakage performance of the ball valve, in the present invention, the ball valve also includes a reinforced seal 6, which is movably arranged between the sealing ring 4 and the valve seat 1, and an extension section 5 is also provided at the inlet and outlet ports of the valve core 2, and the extension section 5 extends into the channel of the valve seat 1. The extension section 5 is used to cooperate with the reinforced seal 6 to achieve further sealing between the valve core 2 and the valve seat 1.

[0027] Specifically, in one possible embodiment, Figure 2 As shown, the reinforced seal 6 includes a pressure section 61, a connecting section 62 and an abutting section 633. One end of the pressure section 61 extends into the channel of the valve seat 1, and the other end extends into the valve seat 1 and is connected to the abutting section 633 through the connecting section 62. The other end of the abutting section 633 extends to the outer end face of the sealing ring 4, and the end face of the abutting section 633 and the outer end face of the sealing end are located on the same horizontal plane, wherein the pressure section 61, the connecting section 62 and the abutting section 633 form a Z-shaped structure, and the pressure section 61 abuts on the outer side wall of the extension section 5, and the inner side faces of the connecting section 62 and the abutting section 633 both abut against the outer side face of the sealing ring 4 to ensure the pressure area between the reinforced seal 6 and the sealing ring 4.

[0028] During operation, liquid enters from the water inlet end of the ball valve, and the flow of liquid forms water pressure. The pressure section 61 on the reinforcing seal 6 is affected by the water pressure, and the pressure section 61 squeezes the sealing ring 4 toward the ball valve, exerting an action toward the ball valve on the sealing ring 4, thereby improving the sealing tightness between the sealing ring 4 and the ball valve, and further enhancing the sealing effect.

[0029] The extension section 5 and valve core 2 are connected as an integral structure. This facilitates integral forging and improves production efficiency. To enhance the connection strength between the extension section 5 and the ball valve, a reinforcement strip is provided at the connection between the extension section 5 and the ball valve to help prevent the extension section 5 from breaking.

[0030] The extension section 5 is designed as an arc-shaped structure, and the curvature of the arc matches the surface curvature of the ball valve. The pressure section 61 is also designed as an arc-shaped structure that matches the extension section 5. This not only increases the pressure-bearing area of ​​the pressure section 61, helping to improve sealing performance, but also ensures maximum contact area between the pressure section 61 and the extension section 5, thereby facilitating force transmission and force distribution within the pressure section 61, thus also improving sealing performance and ensuring the safety of the extension section 5.

[0031] In addition, the length of the extension section 5 is smaller than that of the pressure section 61. In this way, when liquid passes through the ball valve, the extension section 5 avoids direct frontal contact with the flowing liquid under the shielding effect of the pressure section 61, which not only improves the pressure effect of the pressure section 61 and ensures the sealing performance, but also protects the extension section 5 and extends the service life of the extension section 5. And because the length of the pressure section 61 is greater than the length of the extension section 5. Under the action of water pressure on the pressure section 61, one end of the pressure section 61 bends toward one end of the extension section 5, which not only changes the direction of liquid flow, reduces the impact on the inner wall of the valve core 2, and protects the valve core 2, but also protects one end of the extension section 5 through the physical defense of the pressure section 61, further extending the service life of the extension section 5.

[0032] In the present invention, the ball valve further includes a secondary reinforcement member 7, which is used to further improve the sealing effect.

[0033] Specifically, in one possible embodiment, the secondary reinforcement 7 is installed on the valve seat 1, and the secondary reinforcement 7 includes a pressure ring 71, an abutment ring 72 and a reinforcement ring 73. The pressure ring 71 is installed on the valve seat 1, and the inner end of the pressure ring 71 extends into the channel of the valve seat 1, and the outer end is connected to the abutment ring 72. One end of the reinforcement ring 73 abuts on the abutment ring 72, and the other end abuts on the abutment section 633.

[0034] During operation, liquid enters from the water inlet end of the ball valve, and the flow of liquid forms water pressure. The pressure-bearing ring 71 is affected by the water pressure, and the pressure-bearing ring 71 squeezes the abutment ring 72 and the reinforcement ring 73 toward the direction of the ball valve, and finally transmits the squeezing force to the sealing ring 4, and also applies a force toward the ball valve to the sealing ring 4. In conjunction with the reinforced sealing member 6, double squeezing of the sealing ring 4 is achieved, further improving the sealing tightness between the sealing ring 4 and the ball valve, and further improving the sealing effect.

[0035] The reinforcement ring 73 comprises a front section 731, a middle section 732, and a terminal section 733, all connected together into an integral structure. The front section 731 abuts the abutment ring 72, which is then connected to the terminal section 733 via the middle section 732. The terminal section 733 and the middle section 732 combine to form a ring structure with a T-shaped cross-section. This not only reduces the overall volume of the reinforcement ring 73, but also ensures a contact area with the sealing ring 4, ensuring a stable abutment.

[0036] The distance between the inner side of the pressure ring 71 and the bottom surface of the valve seat 1 is smaller than the distance between the inner side of the reinforcing seal 6 and the bottom surface of the valve seat 1. This can prevent the pressure ring 71 from affecting the pressure of the pressure section 61 and ensure the normal sealing effect of the reinforcing seal 6.

[0037] Example 2

[0038] The difference between this embodiment and the first embodiment is that the length of the extension section 5 is equal to the length of the pressure section 61. In this way, the extension section 5 and one end of the pressure section 61 remain flush, which can also ensure normal pressure and further seal.

[0039] The specific implementation principle of the present invention is: when in use, the valve core 2 is opened through the valve stem 3, the channel of the valve core 2 is connected with the channel inside the valve seat 1, the ball valve is opened, and the liquid flows. During the flow of the liquid, water pressure is generated, and the water pressure causes an extrusion force on the pressure ring 71 and the pressure section 61, so that the reinforced seal 6 and the secondary reinforcement 7 apply double pressure to the sealing ring 4, thereby improving the sealing effect of the sealing ring 4 and realizing a zero-leakage ball valve.

[0040] In addition, in the present invention, the ball valve is made of high-temperature and high-pressure forged steel, and the sealing ring 4, the reinforcing seal 6, and the secondary reinforcing member 7 are made of high-temperature and high-pressure resistant materials. In this way, the ball valve can meet the requirements of use in high-temperature and high-pressure environments, expanding its scope of application.

[0041] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A high-temperature and high-pressure forged steel zero-leakage ball valve, comprising a valve seat (1), a valve core (2), a valve stem (3) and a sealing ring (4), wherein the sealing ring (4) is arranged between the valve seat (1) and the valve core (2), and is characterized in that: It also includes a reinforcing seal (6), which is movably arranged between the sealing ring (4) and the valve seat (1), and an extension section (5) is provided at the inlet and outlet ports of the valve core (2), wherein: The reinforced sealing member (6) comprises a pressure section (61), a connecting section (62) and an abutting section (633), wherein the pressure section (61) abuts against the outer wall of the extension section (5), the pressure section (61) is connected to the abutting section (633) via the connecting section (62), and the abutting section (633) abuts against the outer wall of the sealing ring (4); It also includes a secondary reinforcement member (7), the secondary reinforcement member (7) is installed on the valve seat (1), the secondary reinforcement member (7) includes a pressure ring (71), an abutment ring (72) and a reinforcement ring (73), the pressure ring (71) is installed on the valve seat (1), the inner end of the pressure ring (71) extends into the channel of the valve seat (1), and the outer end is connected to the abutment ring (72), one end of the reinforcement ring (73) abuts the abutment ring (72), and the other end abuts the abutment section (633); The reinforcing ring (73) comprises a front section (731), a middle section (732), and a terminal section (733) connected into an integral structure, the front section (731) abuts the abutting ring (72), the front section (731) is connected to the terminal section (733) via the middle section (732), and the terminal section (733) and the middle section (732) are combined to form a ring structure with a T-shaped cross section.

2. The high-temperature and high-pressure forged steel zero-leakage ball valve according to claim 1, characterized in that: The extension section (5) is configured as an arc-shaped structure, and the curvature of the arc-shaped structure matches the surface curvature of the ball valve; The pressure section (61) is configured as an arc-shaped structure that matches the extension section (5).

3. The high-temperature and high-pressure forged steel zero-leakage ball valve according to claim 1, characterized in that: The length of the extension section (5) is not greater than the length of the pressure section (61).

4. The high-temperature and high-pressure forged steel zero-leakage ball valve according to claim 1, characterized in that: The extension section (5) and the valve core (2) are connected to form an integrated structure.

5. The high-temperature and high-pressure forged steel zero-leakage ball valve according to claim 1, characterized in that: The distance between the inner side surface of the pressure ring (71) and the bottom surface of the valve seat (1) is smaller than the distance between the inner side surface of the reinforced seal (6) and the bottom surface of the valve seat (1).

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