High-pressure balance type pressure regulator

Abstract

The utility model discloses a high pressure balance type pressure regulator, relates to pressure regulator field, including valve body, valve clack, first valve rod, second valve rod, regulating piece, pressure regulating balance piece and cut-off balance piece, valve clack is double-sided rubber, regulating piece is used for regulating first valve port openness, pressure regulating balance piece is used for balancing valve body inlet pressure acting force on first valve rod, and cut-off balance piece is used for cutting off balance piece. The cut-off balance part is used for balancing acting force of valve body inlet pressure on the second valve rod. A valve clack of a double-face rubber structure is adopted, and the two faces of the valve clack are located at a first valve port and a second valve port correspondingly. The first valve rod and the second valve rod can act on the valve clack at the same time. A traditional built-in bypass structure is omitted by the cut-off balance part, the cut-off balance part balances the acting force of the inlet pressure on the second valve port, and manual reset of cut-off is simple and convenient; the pressure regulating balance piece balances the acting force of inlet pressure on the first valve rod, and the precision of the pressure regulator is improved.

Description

Technical Field

[0001] The utility model relates to the field of voltage regulators, in particular to a high-pressure balanced voltage regulator. Background Art

[0002] The moving valve trim in the main control of a high-pressure pressure regulator is the controlled element in the pressure automatic control system of the pressure regulator. Under the working conditions of high inlet pressure and high pressure drop, it is difficult to realize that the pressure regulator has good pressure regulation and stabilization accuracy, good closing performance, good full-flow pressure regulation stability, and a wide range of inlet and outlet pressure applications. This is because under high-pressure conditions, the fluid will generate a large nonlinear force on the moving valve trim, making control difficult. Utility Model Content

[0003] The purpose of this utility model is to design a high-pressure balanced voltage regulator in order to solve the above problems.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A high-voltage balanced voltage regulator, comprising:

[0006] The valve body is provided with a first valve port and a second valve port, and the first valve port is connected to the second valve port;

[0007] Valve disc; the valve disc is double-sided rubber, and the two sides of the valve disc are respectively located at the first valve port and the second valve port;

[0008] First valve stem: The first valve stem is used to close the first valve port;

[0009] Second valve stem: The second valve stem is used to close the second valve port;

[0010] The regulating member is used to adjust the opening of the first valve port, and the regulating end of the regulating member acts on the first valve stem;

[0011] Pressure regulating balancing member; the pressure regulating balancing member is used to balance the force exerted by the valve body inlet pressure on the first valve stem;

[0012] Cut-off balance piece; the cut-off balance piece is used to balance the force of the valve body inlet pressure on the second valve stem.

[0013] The beneficial effects of this utility model include: a double-sided rubber valve disc, with its two sides positioned at the first and second valve ports, respectively; a valve stem and a valve stem that can simultaneously act on the valve disc; a cutoff balance member that eliminates the traditional internal bypass structure, balancing the force exerted by the inlet pressure on the second valve port, making manual reset of the cutoff simple and convenient; and a pressure-regulating balance member that balances the force exerted by the inlet pressure on the first valve stem, improving the regulator's accuracy. This regulator can be used in large-scale station equipment such as city gate stations and pressure-regulating skids, achieving high pressure regulation accuracy and stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a high-pressure balanced voltage regulator of the utility model;

[0015] The corresponding figures are as follows:

[0016] 1-valve body, 2-first valve port, 3-second valve port, 4-valve disc, 5-second valve stem, 6-push channel, 7-cut-off balance channel, 8-second connecting hole, 9-second elastic member, 10-push rod, 11-linear moving member, 12-limiting block, 13-second sealing ring, 14-first valve stem, 15-first elastic member, 16-pressure regulating balance channel, 17-regulating body, 18-diaphragm component, 19-push chamber, 20-first chamber, 21-second chamber, 22-pressure stabilizer, 23-commander, 24-push ring, 25-first sealing ring, 26-valve position indicator. DETAILED DESCRIPTION

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present invention. It should be understood that the described embodiments are only a portion of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0020] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present utility model.

[0021] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0022] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0023] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings.

[0024] like Figure 1 As shown, a high-voltage balanced voltage regulator includes:

[0025] The valve body 1 is provided with a first valve port 2 and a second valve port 3, and the first valve port 2 is connected to the second valve port 3;

[0026] Valve flap 4; the valve flap 4 is double-sided rubber, and the two sides of the valve flap 4 are respectively located at the first valve port 2 and the second valve port 3;

[0027] The first valve stem 14 is used to close the first valve port 2;

[0028] The second valve stem 5 is used to close the second valve port 3;

[0029] The regulating member is used to adjust the opening of the first valve port 2, and the regulating end of the regulating member acts on the first valve stem 14;

[0030] Pressure-regulating balancing member; the pressure-regulating balancing member is used to balance the force exerted by the inlet pressure of the valve body 1 on the first valve stem 14;

[0031] Cut off the balancing member; the cut off balancing member is used to balance the force of the inlet pressure of the valve body 1 on the second valve stem 5.

[0032] The pressure regulating and balancing parts include:

[0033] The pressure-regulating and balancing channel 16 is provided in the valve body 1 , and the first valve stem 14 is movably mounted in the pressure-regulating and balancing channel 16 . A first communicating hole is provided at the first end of the first valve stem 14 , and the pressure-regulating and balancing channel 16 is connected to the inlet of the valve body 1 through the first communicating hole.

[0034] The first elastic member 15; the two ends of the first elastic member 15 are respectively squeezed and contacted with the first valve stem 14 and the valve body 1, and the direction of the elastic force of the first elastic member 15 on the first valve stem 14 is a first direction. The first direction is that the second end of the first valve stem 14 is toward the first end of the first valve stem 14. When the first valve port 2 is closed, the first end of the first valve stem 14 is squeezed and contacted with the valve disc 4.

[0035] The first elastic member 15 is a compression spring, which is always in a compressed state.

[0036] The pressure-regulating and balancing member further includes at least one first sealing ring 25 , which is used for sealing between the outer side wall of the first end of the first valve stem 14 and the inner side wall of the pressure-regulating and balancing channel 16 .

[0037] Adjustment parts include:

[0038] The regulating body 17 is provided with a regulating chamber and a pushing chamber 19, the regulating chamber is provided with a mounting channel, the second end of the first valve stem 14 is movably mounted in the mounting channel;

[0039] The membrane component 18 is used to separate the regulating chamber into a first chamber 20 and a second chamber 21, and the push chamber 19 is connected to the second chamber 21;

[0040] The pressure stabilizer 22; the first opening of the pressure stabilizer 22 is connected to the inlet air pressure of the valve body 1, and the pressure stabilizer 22 is used to stabilize the inlet pressure into a load pressure;

[0041] Commander 23; The pressure regulator 22 provides the load pressure to the commander 23, which is used to adjust the working pressure according to the load pressure and the outlet pressure of the valve body 1. The working pressure is passed into the second chamber 21, and the outlet pressure of the valve body 1 is passed into the first chamber 20;

[0042] Push ring 24; push ring 24 is fixedly mounted on the first valve stem 14, and the push ring 24 is disposed in the push chamber 19. The working pressure in the push chamber 19 generates a force in a second direction on the push ring 24, and the second direction is opposite to the first direction.

[0043] Cut-off balance components include:

[0044] Cut-off balancing channel 7; the cut-off balancing channel 7 is provided on the valve body 1, the second valve stem 5 is movably mounted in the cut-off balancing channel 7, the first end of the second valve stem 5 is provided with a second communicating hole 8, and the cut-off balancing channel 7 is communicated with the inlet of the valve body 1 through the second communicating hole 8;

[0045] The second end of the second valve stem 5 is provided with a push channel 6, and the first end of the push rod 10 is movably mounted in the push channel 6;

[0046] The second elastic member 9; the two ends of the second elastic member 9 are respectively in press contact with the second valve stem 5 and the valve body 1, and the direction of the elastic force exerted by the second elastic member 9 on the second valve stem 5 is a third direction, which is the second end of the second valve stem 5 toward the first end of the second valve stem 5. When the first valve port 2 is closed, the first end of the second valve stem 5 is in press contact with the valve disc 4; the second elastic member 9 is a compression spring, which is always in a compressed state;

[0047] Linear moving member 11; the linear moving member 11 is used to drive the push rod 10 to move linearly; the linear moving member 11 is a linear motor, a cylinder, an oil cylinder or other mechanism that can drive the push rod 10 to move linearly;

[0048] The limiting block 12 is fixedly mounted on the first end of the push rod 10 , and the size of the limiting block 12 is larger than the size of the push channel 6 away from the second valve port 3 at one end.

[0049] The cut-off balance member further includes at least one second sealing ring 13 , which is used for sealing between the outer side wall of the first end of the second valve stem 5 and the inner side wall of the regulating channel.

[0050] A valve position indicator 26 is installed on the first chamber 20 , and the model of the valve position indicator 26 is RTJ2-50 / 10.0-EQ.

[0051] This utility model is suitable for operating conditions with inlet pressures up to 10 MPa. It utilizes a balanced structure to fully balance the effect of the inlet pressure of valve body 1 on the regulator's performance. The second valve port 3 utilizes a balanced structure: the outer sealing diameter of the second valve port 3 is the same as the diameter of the valve disc 4 at the sealing point, offsetting the effect of the inlet pressure of valve body 1 on the second valve port 3. The second valve stem 5 utilizes a balanced structure: assuming the diameter of the sealing point of the second valve stem 5 is Da, the diameter of the second connecting hole 8 on the second valve stem 5 is Db, and the piston diameter is Dc, the formula is P1π(Da / 2)^2 - P1π(Db / 2)^2 = P1π(Dc / 2)^2. Simplified, this translates to Da^2 = Db^2 + Dc^2.

[0052] The pressure stabilizer 22 receives the inlet air pressure, stabilizes the inlet pressure P1 into the load pressure P3, and supplies it to the controller 23. The regulated working pressure Pm is passed into the second chamber 21 through the controller 23, and the outlet pressure P2 is passed into the first chamber 20.

[0053] When the adjusting bolt of the commander 23 is not adjusted, the first valve stem 14 moves downward under the action of the first elastic member 15 and is squeezed into contact with the valve disc 4, regarding the first valve port 2; the commander 23 adjusting bolt is rotated clockwise, and the commander 23 adjusting bolt is rotated clockwise. By compressing the commander 23 pressure regulating spring, the valve port of the commander 23 is opened, and the working pressure Pm enters the lower diaphragm cover chamber. When the working pressure Pm in the push chamber 19 increases the force in the second direction on the push ring 24 and is greater than the elastic force of the first elastic member 15, the first valve port 2 is opened, and the gas medium flows into the outlet pipe through the second valve port 3 and the first valve port 2 in turn, and the outlet pressure P2 rises. By adjusting the commander 23 adjusting bolt, the outlet pressure P2n value of the pressure regulator is set. When the outlet pressure P2 rises, the force of the outlet pressure P2 acting on the diaphragm component 18 of the commander 23 is greater than the force of the pressure regulating spring of the commander 23, the valve port opening of the commander 23 decreases, the working pressure Pm decreases, the force of the outlet pressure P2 in the pressure regulator is greater than the force of the working Pm, the opening of the first valve port 2 decreases, and the outlet pressure P2 decreases until it returns to the set value P2n.

[0054] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. Any technical deformation made according to the technical solution of the present invention falls within the protection scope of the present invention.

Claims

1. A high-voltage balanced voltage regulator, characterized in that: include: Valve body; The valve body is provided with a first valve port and a second valve port, and the first valve port is communicated with the second valve port; Valve disc; the valve disc is double-sided rubber, and the two sides of the valve disc are respectively located at the first valve port and the second valve port; First valve stem: The first valve stem is used to close the first valve port; Second valve stem: The second valve stem is used to close the second valve port; The regulating member is used to adjust the opening of the first valve port, and the regulating end of the regulating member acts on the first valve stem; Pressure regulating balancing member; the pressure regulating balancing member is used to balance the force exerted by the valve body inlet pressure on the first valve stem; Cut-off balance piece; the cut-off balance piece is used to balance the force of the valve body inlet pressure on the second valve stem.

2. A high-voltage balanced voltage regulator according to claim 1, characterized in that: The pressure regulating and balancing parts include: A pressure-regulating and balancing channel is provided in the valve body, the first valve stem is movably mounted in the pressure-regulating and balancing channel, a first communicating hole is provided at the first end of the first valve stem, and the pressure-regulating and balancing channel is connected to the valve body inlet through the first communicating hole; The first elastic member; the two ends of the first elastic member are respectively in squeeze contact with the first valve stem and the valve body, the direction of the elastic force of the first elastic member on the first valve stem is a first direction, the first direction is the second end of the first valve stem toward the first end of the first valve stem, when the first valve port is closed, the first end of the first valve stem is in squeeze contact with the valve disc.

3. A high-voltage balanced voltage regulator according to claim 2, characterized in that: The pressure-regulating balancing member further includes at least one first sealing ring, which is used for sealing between the outer side wall of the first end of the first valve stem and the inner side wall of the pressure-regulating balancing channel.

4. A high-voltage balanced voltage regulator according to claim 1, characterized in that: Adjustment parts include: The regulating body is provided with a regulating chamber and a pushing chamber, the regulating chamber is provided with a mounting channel, and the second end of the first valve stem is movably mounted in the mounting channel; The membrane component is used to separate the regulating chamber into a first chamber and a second chamber, and the push chamber is connected to the second chamber; A pressure stabilizer; a first opening of the pressure stabilizer is connected to the inlet air pressure of the valve body, and the pressure stabilizer is used to stabilize the inlet pressure into a load pressure; The pilot; the pressure regulator provides the load pressure to the pilot, and the pilot is used to adjust the working pressure according to the load pressure and the valve body outlet pressure. The working pressure is passed into the second chamber, and the valve body outlet pressure is passed into the first chamber; Push ring; the push ring is fixedly mounted on the first valve stem, and the push ring is arranged in the push chamber. The working pressure in the push chamber generates a force in the second direction on the push ring, and the second direction is opposite to the first direction.

5. The high-voltage balanced voltage regulator according to claim 1, characterized in that: Cut-off balance components include: Cut off the balancing channel; the cut off balancing channel is provided on the valve body, the second valve stem is movably installed in the cut off balancing channel, the first end of the second valve stem is provided with a second communicating hole, and the cut off balancing channel is connected to the valve body inlet through the second communicating hole; The second end of the second valve stem is provided with a push channel, and the first end of the push rod is movably mounted in the push channel; a second elastic member; two ends of the second elastic member are respectively in press contact with the second valve stem and the valve body, the direction of the elastic force exerted by the second elastic member on the second valve stem is a third direction, and the third direction is that the second end of the second valve stem is toward the first end of the second valve stem, and when the first valve port is closed, the first end of the second valve stem is in press contact with the valve disc; Linear moving part; the linear moving part is used to drive the push rod to move linearly; The limiting block is fixedly mounted on the first end of the push rod, and the size of the limiting block is larger than the size of the push channel away from the second valve port end.

6. A high-voltage balanced voltage regulator according to claim 5, characterized in that: The cut-off balance member further includes at least one second sealing ring, which is used for sealing between the outer side wall of the first end of the second valve stem and the inner side wall of the cut-off balance channel.

Images