Ultrahigh pressure stop valve

Abstract

The utility model discloses an ultrahigh pressure stop valve, and particularly relates to the technical field of stop valves, the ultrahigh pressure stop valve comprises a water outlet valve body, a switch valve body and a two-way pressure release valve end cover, the water outlet valve body is installed on one side of the switch valve body, the two-way pressure release valve end cover is installed on one side, away from the water outlet valve body, of the switch valve body, and a pressing cap is arranged on one side, away from the switch valve body, of the water outlet valve body. A packing ring is arranged on the side, close to the water outlet valve body, of the pressing cap, and a valve element body is arranged on the side, away from the pressing cap, of the packing ring. Liquid flows into the groove dug in the inner cavity of the switch valve body through the connecting port, and the pneumatic connector drives the two-way pressure release valve piston and the two-way pressure release valve air cylinder which are installed on the inner side of the two-way pressure release valve end cover to move through the sliding groove and the sliding block, so that the two-way pressure release valve piston and the two-way pressure release valve air cylinder are attached to or separated from the switch valve pad. Liquid is controlled to flow to the conical head valve pad, the water outlet valve element and the valve element body through the switch valve pad and is finally discharged from the pressing cap, the packing ring and the water outlet valve body, and control over liquid flow cut-off is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of stop valve more specifically, the utility model relates to superhigh pressure stop valve. BACKGROUND

[0002] The stop valve is a kind of forced sealing type valve, its core function is to realize the full opening or full closing of pipeline by the lifting movement of valve flap, mainly used to cut off or connect medium flow, not to regulate flow, and the superhigh pressure stop valve is a kind of valve specially designed for extreme high pressure environment, mainly used to control the flow of gas or liquid medium, with extremely high sealing property and pressure resistance;

[0003] For example, application No. CN201821826693.X provides a superhigh pressure stop valve, which solves the problem of "the existing stop valve has deficiencies in high pressure resistance and impact resistance, and needs to be improved to meet high performance requirements"; The superhigh pressure stop valve is commonly used in HPP experimental machine, in addition to this, it can also be used in energy industry and material processing, and the superhigh pressure stop valve is a key device for controlling the on-off of superhigh pressure fluid, used for fluid isolation, completely cutting off medium flow in high pressure system, realizing zero leakage under superhigh pressure, wherein in the prior art, because the opening and closing torque is large, a hydraulic drive system needs to be equipped, the ball is easy to deform under high pressure, the sealing performance decreases after long-term use, and the flow capacity is low, and the soft sealing material is not resistant to high temperature;

[0004] Therefore, the superhigh pressure stop valve is proposed to solve the above problems. INVENTION CONTENTS

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a superhigh pressure stop valve to solve the problems in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a superhigh pressure stop valve, comprising a water outlet valve body, a switch valve body and a bidirectional pressure relief valve end cover, the water outlet valve body is installed on one side of the switch valve body, and a bidirectional pressure relief valve end cover is installed on the side of the switch valve body away from the water outlet valve body, a compression cap is arranged on the side of the water outlet valve body away from the switch valve body, a packing ring is arranged on the side of the compression cap close to the water outlet valve body, a valve core main body is arranged on the side of the packing ring away from the compression cap, and a water outlet valve core is arranged on the side of the valve core main body away from the packing ring, a tapered head valve pad is arranged on the end of the water outlet valve body close to the switch valve body, a switch valve pad is arranged on the contact surface of the tapered head valve pad and the switch valve body, a bidirectional pressure relief valve cylinder is arranged on the contact surface of the switch valve body and the bidirectional pressure relief valve end cover, a bidirectional pressure relief valve piston is arranged on the inner side of the bidirectional pressure relief valve end cover, and a pneumatic interface is arranged on the side of the bidirectional pressure relief valve end cover away from the bidirectional pressure relief valve cylinder.

[0007] The cavity formed between the outlet valve body, the switch valve body and the double-way pressure relief valve end cover constitutes a communication structure, the contact surface of the double-way pressure relief valve cylinder and the double-way pressure relief valve end cover is provided with an O-shaped ring, and the double-way pressure relief valve cylinder and the double-way pressure relief valve end cover constitute a sliding structure through the O-shaped ring.

[0008] Preferably, the pressure cap is an inner thread cap with a size of 3 / 8 inch, the compression ring is an inner thread ring with a size of 3 / 8 inch, and the upper end surface of the switch valve body is provided with a connecting port which is in communication with the cavity inside the switch valve body.

[0009] Preferably, the outlet valve body, the valve core body and the outlet valve core are all 87k type valves, one end of the double-way pressure relief valve cylinder is in the shape of a triangular pyramid, the through hole penetrating the side end surface of the switch valve pad is in the same center as the double-way pressure relief valve cylinder, and the diameter of the telescopic end of the double-way pressure relief valve cylinder is greater than that of the through hole of the side end surface of the switch valve pad.

[0010] Preferably, the pressure cap, the outlet valve body, the switch valve body, the double-way pressure relief valve end cover and the pneumatic interface are fixedly and sealingly connected, and the pressure cap, the outlet valve body, the switch valve body, the double-way pressure relief valve end cover and the pneumatic interface are provided with sealing rings.

[0011] Preferably, the pneumatic interface is provided with two groups, the two groups of pneumatic interfaces and the double-way pressure relief valve piston and the double-way pressure relief valve cylinder in the inner cavity of the double-way pressure relief valve end cover constitute a communication structure, the inner cavity of the double-way pressure relief valve end cover is provided with a sliding groove, the inner side of the sliding groove is provided with a sliding block, and the sliding groove and the sliding block constitute a sliding structure.

[0012] The technical effects and advantages of the utility model are as follows:

[0013] Compared with the prior art, the ultrahigh pressure stop valve in use, wherein the liquid flow is controlled by the pressure cap, the compression ring, the outlet valve body, the valve core body, the switch valve body, the two-way pressure relief valve end cover and the pneumatic interface, wherein the pneumatic interface is connected with an external air pump through an air pipe, and wherein the two-way pressure relief valve cylinder is attached to or separated from the switch valve pad, thereby achieving the interruption of liquid flow, and wherein the pressure cap and the compression ring are threadedly connected with the outlet valve body for subsequent fixation of the outlet valve body, and wherein the liquid flows into the groove in the inner cavity of the switch valve body through the connecting port, and the two-way pressure relief valve piston and the two-way pressure relief valve cylinder inside the two-way pressure relief valve end cover are driven to move through the sliding groove and the sliding block, thereby making the two-way pressure relief valve piston and the two-way pressure relief valve cylinder attached to or separated from the switch valve pad, so as to control the liquid flow to the cone head valve pad, the outlet valve core and the valve core body through the switch valve pad, and finally discharged from the pressure cap and the compression ring and the outlet valve body, thereby realizing the above structure, achieving the control of the liquid flow interruption, and wherein each part is sealingly connected to ensure the sealing property during the liquid flow, and the device can be applied to higher pressure, thereby solving the problems of "the prior art requires hydraulic drive system due to large opening and closing torque, the ball is easy to deform under high pressure, the sealing property is reduced after long-term use, and the flow capacity is low, and the soft sealing material is not resistant to high temperature", wherein the gas-driven mode is convenient for installing the driving structure, and the needle-type closing structure is adopted to avoid deformation of the closing structure, while ensuring the flow capacity and the high temperature resistance between the sealing connection, thereby finally solving the problems proposed in the background art. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the switch valve body of the utility model.

[0015] Figure 2 It is a front view structure schematic view of the switch valve body of the utility model.

[0016] Figure 3 It is a front view structure schematic view of the switch valve body of the utility model.

[0017] Figure 4 It is a front view structure schematic view of the switch valve body of the utility model.

[0018] Figure 5 It is a left view structure schematic view of the two-way pressure relief valve end cover of the utility model.

[0019] Figure 6 It is a right view structure schematic view of the two-way pressure relief valve end cover of the utility model.

[0020] The reference signs are: 1, pressing cap; 2, packing ring; 3, water outlet valve body; 4, valve core main body; 5, water outlet valve core; 6, conical head valve pad; 7, switch valve pad; 8, switch valve body; 9, two-way pressure relief valve cylinder; 10, two-way pressure relief valve piston; 11, two-way pressure relief valve end cover; 12, pneumatic interface; 13, O-ring; 14, connecting port; 15, sliding groove; 16, sliding block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] EMBODIMENT

[0023] As shown in the accompanying drawings Figures 1 to 6The illustrated ultra-high pressure stop valve, including water outlet valve body 3, switch valve body 8 and bidirectional pressure relief valve end cover 11, water outlet valve body 3 is installed on one side of switch valve body 8, and switch valve body 8 is installed on the side away from water outlet valve body 3 Bidirectional pressure relief valve end cover 11, the side away from switch valve body 8 of water outlet valve body 3 is provided with pressure cap 1, and the side close to water outlet valve body 3 of pressure cap 1 is provided with packing ring 2, the side away from pressure cap 1 of packing ring 2 is provided with valve core body 4, and the side away from packing ring 2 of valve core body 4 is provided with water outlet valve core 5, the end close to switch valve body 8 of water outlet valve body 3 is provided with conical head valve pad 6, and the contact surface of conical head valve pad 6 and switch valve body 8 is provided with switch valve pad 7, the contact surface of switch valve body 8 and bidirectional pressure relief valve end cover 11 is provided with bidirectional pressure relief valve cylinder 9, the inner side of bidirectional pressure relief valve end cover 11 is provided with bidirectional pressure relief valve piston 10, the side away from bidirectional pressure relief valve cylinder 9 of bidirectional pressure relief valve end cover 11 is provided with pneumatic interface 12, the cavity formed between water outlet valve body 3, switch valve body 8 and bidirectional pressure relief valve end cover 11 constitutes a communication structure, the contact surface of bidirectional pressure relief valve cylinder 9 and bidirectional pressure relief valve end cover 11 is provided with O ring 13, and bidirectional pressure relief valve cylinder 9 and bidirectional pressure relief valve end cover 11 constitute a sliding structure through O ring 13, pressure cap 1 adopts internal thread cap with specification and model of 3 / 8 inch, packing ring 2 adopts internal thread ring with specification and model of 3 / 8 inch, the upper end surface of switch valve body 8 is provided with connecting port 14, and connecting port 14 communicates with the cavity inside switch valve body 8, wherein the liquid flow interruption control is carried out through pressure cap 1, packing ring 2, water outlet valve body 3, valve core body 4, switch valve body 8, bidirectional pressure relief valve end cover 11 and pneumatic interface 12, pneumatic interface 12 is connected with external air pump through air pipe, and bidirectional pressure relief valve cylinder 9 is attached to or separated from switch valve pad 7, the liquid flow interruption is realized, and pressure cap 1 and packing ring 2 are threadedly connected with water outlet valve body 3 for subsequent fixation of water outlet valve body 3, and the liquid flows into the groove formed in the inner cavity of switch valve body 8 through connecting port 14, and the bidirectional pressure relief valve piston 10 and bidirectional pressure relief valve cylinder 9 installed in the inner side of bidirectional pressure relief valve end cover 11 are driven to move through sliding groove 15 and sliding block 16, so that bidirectional pressure relief valve piston 10 and bidirectional pressure relief valve cylinder 9 are attached to or separated from switch valve pad 7, the liquid flow through switch valve pad 7 to conical head valve pad 6, water outlet valve core 5 and valve core body 4 is controlled, and finally discharged from pressure cap 1 and packing ring 2 and water outlet valve body 3, the liquid flow interruption control is realized, and the sealing connection between each part is realized to ensure the sealing property during liquid flow, and the device can be applied to higher pressure, thereby solving the problems of "in the prior art, because the opening and closing torque is large, a hydraulic drive system needs to be equipped, the ball is easy to deform under high pressure, the sealing performance decreases after long-term use, the flow capacity is low, and the soft sealing material is not resistant to high temperature", the installation of driving structure is facilitated through the gas driving mode, the needle type closing structure is adopted to avoid deformation of the closing structure, and the resistance to high temperature between flow capacity and sealing connection is ensured.To finally solve the problems raised in the background art, the water outlet valve body 3, the valve core body 4 and the water outlet valve core 5 all adopt the 87k type valve, one end of the bidirectional pressure relief valve cylinder 9 is in the shape of a triangular pyramid, the through hole of the bidirectional pressure relief valve cylinder 9 and the side end face of the switch valve pad 7 are in the same center, the diameter of the telescopic end of the bidirectional pressure relief valve cylinder 9 is greater than the diameter of the through hole of the side end face of the switch valve pad 7, the compression cap 1, the water outlet valve body 3, the switch valve body 8, the bidirectional pressure relief valve end cover 11 and the pneumatic interface 12 are fixedly and sealingly connected, the compression cap 1, the water outlet valve body 3, the switch valve body 8, the bidirectional pressure relief valve end cover 11 and the pneumatic interface 12 are provided with sealing rings, the pneumatic interface 12 is provided with two groups, the two groups of the pneumatic interface 12 and the bidirectional pressure relief valve piston 10 and the bidirectional pressure relief valve cylinder 9 in the inner cavity of the bidirectional pressure relief valve end cover 11 form a communication structure, the inner cavity of the bidirectional pressure relief valve end cover 11 is provided with a sliding groove 15, the inner side of the sliding groove 15 is provided with a sliding block 16, and the sliding groove 15 and the sliding block 16 form a sliding structure, in the embodiment, the compression cap 1, the water outlet valve body 3, the valve core body 4 and the water outlet valve core 5 and the like are all the commonly known devices of the technical personnel in the field and can be customized or selected according to the actual requirements, here we only use them and do not improve their structures and functions, and thus will not be described in detail.

[0024] The working process of the utility model is as follows: the compression cap 1, the compression ring 2, the water outlet valve body 3, the valve core body 4, the switch valve body 8, the bidirectional pressure relief valve end cover 11 and the pneumatic interface 12 are used to control the liquid flow interruption, the pneumatic interface 12 is connected with an external air pump through an air pipe, the bidirectional pressure relief valve cylinder 9 is attached to or separated from the switch valve pad 7, the liquid flow interruption is realized, the compression cap 1 and the compression ring 2 are threadedly and limitingly connected with the water outlet valve body 3, so as to fix the water outlet valve body 3, the liquid flows into the groove in the inner cavity of the switch valve body 8 through the connecting port 14, the bidirectional pressure relief valve piston 10 and the bidirectional pressure relief valve cylinder 9 installed in the inner side of the bidirectional pressure relief valve end cover 11 are driven to move through the sliding groove 15 and the sliding block 16 of the pneumatic interface 12, the bidirectional pressure relief valve piston 10 and the bidirectional pressure relief valve cylinder 9 are attached to or separated from the switch valve pad 7, the liquid flow direction through the switch valve pad 7 is controlled to the taper head valve pad 6, the water outlet valve core 5 and the valve core body 4, and finally discharged from the compression cap 1 and the compression ring 2 and the water outlet valve body 3, the liquid flow interruption control is realized, the sealing connection between the parts is realized, so as to ensure the sealing property in the liquid flow process, the higher pressure can be applied, the gas driving mode is used to facilitate the installation of the driving structure, the needle type closing structure is adopted to avoid the deformation of the closing structure, the heat resistance between the flow property and the sealing connection is ensured, and finally the problems raised in the background art are solved.

Claims

1. An ultra-high pressure stop valve comprising a water outlet valve body (3), an on-off valve body (8) and a bi-directional pressure relief valve end cover (11), characterized in that: The water outlet valve body (3) is installed on one side of the switch valve body (8), and the switch valve body (8) is installed with a bidirectional pressure relief valve end cover (11) away from the water outlet valve body (3), the water outlet valve body (3) is provided with a pressure cap (1) away from the switch valve body (8), and the pressure cap (1) is provided with a packing ring (2) close to the water outlet valve body (3), the packing ring (2) is provided with a valve core body (4) away from the pressure cap (1), and the valve core body (4) is provided with a water outlet valve core (5) away from the packing ring (2), the water outlet valve body (3) is provided with a tapered head valve pad (6) close to one end of the switch valve body (8), and the tapered head valve pad (6) is provided with a switch valve pad (7) on the contact surface of the switch valve body (8), the switch valve body (8) is provided with a bidirectional pressure relief valve cylinder (9) on the contact surface of the bidirectional pressure relief valve end cover (11), the inner side of the bidirectional pressure relief valve end cover (11) is provided with a bidirectional pressure relief valve piston (10), and the bidirectional pressure relief valve end cover (11) is provided with a pneumatic interface (12) away from the bidirectional pressure relief valve cylinder (9).

2. The ultra-high pressure stop valve according to claim 1, characterized in that: The cavities dug between the water outlet valve body (3), the switch valve body (8) and the bidirectional pressure relief valve end cover (11) constitute a communication structure, the contact surface of the bidirectional pressure relief valve cylinder (9) and the bidirectional pressure relief valve end cover (11) is provided with an O-shaped ring (13), and the bidirectional pressure relief valve cylinder (9) and the bidirectional pressure relief valve end cover (11) constitute a sliding structure through the O-shaped ring (13).

3. The ultra-high pressure stop valve according to claim 1, characterized in that: The pressure cap (1) adopts an inner thread cap with a specification of 3 / 8 inch, the packing ring (2) adopts an inner thread ring with a specification of 3 / 8 inch, the upper end surface of the switch valve body (8) is provided with a connecting port (14), and the connecting port (14) communicates with the cavity inside the switch valve body (8).

4. The ultra-high pressure stop valve according to claim 1, characterized in that: The water outlet valve body (3), the valve core body (4) and the water outlet valve core (5) all adopt a valve with a model of 87k, one end of the bidirectional pressure relief valve cylinder (9) is triangular, the through hole penetrating the side end surface of the switch valve pad (7) is at the same center as the bidirectional pressure relief valve cylinder (9), and the diameter of the telescopic end of the bidirectional pressure relief valve cylinder (9) is greater than the diameter of the through hole of the side end surface of the switch valve pad (7).

5. The ultra-high pressure stop valve according to claim 1, characterized in that: The pressure cap (1), the water outlet valve body (3), the switch valve body (8), the bidirectional pressure relief valve end cover (11) and the pneumatic interface (12) are fixedly and sealingly connected, and sealing rings are arranged between the pressure cap (1), the water outlet valve body (3), the switch valve body (8), the bidirectional pressure relief valve end cover (11) and the pneumatic interface (12).

6. The ultra-high pressure stop valve according to claim 1, characterized in that: The pneumatic interface (12) is provided with two groups, and the two groups of pneumatic interfaces (12) and the bidirectional pressure relief valve piston (10) and the bidirectional pressure relief valve cylinder (9) in the inner cavity of the bidirectional pressure relief valve end cover (11) constitute a communication structure, the inner cavity of the bidirectional pressure relief valve end cover (11) is dug with a sliding groove (15), the inner side of the sliding groove (15) is provided with a sliding block (16), and the sliding groove (15) and the sliding block (16) constitute a sliding structure.

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