Main steam valve steel casting of gas-steam combined heat and power cogeneration steam turbine unit

Abstract

The utility model discloses a main steam valve steel casting of a gas-steam combined heat and power cogeneration steam turbine unit, which comprises a valve body casting, a steam inlet is arranged at the left lower end of the valve body casting, a steam filtering cavity is arranged at the upper end of the steam inlet, a steam through hole is arranged at the right upper end of the steam filtering cavity, and a first valve cavity is arranged at the upper end of the steam through hole. A steam outlet hole is formed in the upper end of the first valve cavity; a fuel gas inlet hole is formed in the lower right end of the valve body casting, a fuel gas filtering cavity is formed in the upper end of the fuel gas inlet hole, a fuel gas through hole is formed in the upper left end of the fuel gas filtering cavity, a second valve cavity is formed in the upper end of the fuel gas through hole, and a fuel gas outlet hole is formed in the upper end of the second valve cavity; a left installation support is integrally arranged at the left lower end of the valve body casting, and an upper installation support is integrally arranged at the right upper end of the valve body casting. According to the technical scheme, the structural design is reasonable, installation is easy, maintenance is convenient, and the manufacturing cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine units, in particular to a main steam valve steel casting of a gas-steam combined heat and power cogeneration steam turbine unit. Background Art

[0002] Cogeneration is a comprehensive energy utilization technology that uses the waste heat generated by fuels (such as natural gas, coal gas, oil and gas, etc.) during the power generation process, converts the waste heat into useful heat energy through a heat recovery device, and also generates electricity. This comprehensive energy utilization method can not only meet the needs of heating and power supply, but also improve energy utilization efficiency and reduce carbon emissions, with important economic and environmental benefits.

[0003] The main steam valve of the existing cogeneration steam turbine unit is generally set separately. If gas and steam are needed, two main steam valves need to be set, which makes the main steam valve difficult to install and maintain, and has high manufacturing costs. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a main steam valve casting for a gas-steam combined heat and power cogeneration steam turbine unit which has a reasonable structural design, is easy to install, convenient to maintain and can reduce manufacturing costs.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a main steam valve casting of a gas-steam combined heat and power cogeneration steam turbine unit, comprising a valve body casting, a steam inlet hole is arranged at the lower left end of the valve body casting, a steam filter chamber is arranged at the upper end of the steam inlet hole, a steam through hole is arranged at the upper right end of the steam filter chamber, a first valve chamber is arranged at the upper end of the steam through hole, and a steam outlet hole is arranged at the upper end of the first valve chamber; a first valve core positioning groove is arranged at the left end of the first valve core positioning groove, and a first valve stem through hole is arranged at the left end of the first valve core positioning groove;

[0006] A gas inlet hole is provided at the lower right end of the valve body casting, a gas filter cavity is provided at the upper end of the gas inlet hole, a gas through hole is provided at the upper left end of the gas filter cavity, a second valve cavity is provided at the upper end of the gas through hole, a gas outlet hole is provided at the upper end of the second valve cavity, a second valve core positioning groove is provided at the right end of the second valve core positioning groove, and a second valve stem through hole is provided at the right end of the second valve core positioning groove;

[0007] A left mounting bracket is integrally provided at the lower left end of the valve body casting, and an upper mounting bracket is integrally provided at the upper right end of the valve body casting.

[0008] The utility model is further configured as follows: an impurity storage groove is arranged at the right lower end of the valve body casting at the steam filter chamber, and a hydrophobic through hole is arranged at the lower end of the impurity storage groove.

[0009] The utility model is further configured as follows: a first end cover groove is arranged at the left end of the valve body casting located at the steam filter chamber, and the first end cover groove is communicated with the steam filter chamber.

[0010] The utility model is further configured as follows: a second end cover groove is arranged at the right end of the valve body casting located at the gas filter chamber, and the second end cover groove is communicated with the gas filter chamber.

[0011] The utility model is further configured as follows: a first connecting flange is integrally provided at the lower end of the valve body casting aligned with the steam inlet position, and a second connecting flange is integrally provided at the upper end of the valve body casting aligned with the steam outlet position; a third connecting flange is integrally provided at the lower end of the valve body casting aligned with the gas inlet position, and a fourth connecting flange is integrally provided at the upper end of the valve body casting aligned with the gas outlet position.

[0012] The utility model is further configured as follows: the valve body casting is made of stainless steel, the valve body casting is provided with a first valve core limiting groove at the right end of the first valve cavity, and the valve body casting is provided with a second valve core limiting groove at the left end of the second valve cavity.

[0013] The utility model is further configured as follows: a chrome plating layer is provided on the outer surface of the valve body casting, and the thickness of the chrome plating layer is 0.12-50 μm.

[0014] The utility model is further configured as follows: a plurality of first connecting through holes are arranged on the left mounting bracket, and a plurality of second connecting through holes are arranged on the upper mounting bracket.

[0015] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model has a reasonable structural design, steam enters the steam filter chamber from the steam inlet hole, the steam filter chamber is used to install the steam filter device, the steam enters the first valve chamber through the steam through hole after filtering, the first valve chamber is used to install the first valve core, the first valve stem through hole is used to install the first electric push rod, the first valve core is driven to move linearly by the first electric push rod, so as to realize the control of steam flow, when the first valve core is opened, the steam can be discharged from the steam outlet hole;

[0016] The gas enters the gas filter chamber from the gas inlet hole. The gas filter chamber is used to install the gas filter device. After being filtered, the gas enters the second valve chamber through the gas through hole. The second valve chamber is used to install the second valve core. The second valve stem through hole is used to install the second electric push rod. The second valve core is driven to move linearly by the second electric push rod, thereby realizing gas flow control. When the second valve core is opened, the gas can be discharged from the gas outlet hole.

[0017] When the user needs to control the flow of steam and gas respectively, only one valve body casting can be used. The main steam valve manufactured by the valve body casting of the utility model can effectively reduce the manufacturing cost, is easy to install and maintain, and has good practicality.

[0018] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0020] Figure 2 It is a front view schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0021] In the description of this embodiment, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore, cannot be understood as a limitation on the utility model. In addition, if the terms "first", "second", and "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] See also Figure 1 and Figure 2 The utility model discloses a main steam valve steel casting of a gas-steam combined heat and power cogeneration steam turbine unit, comprising a valve body casting 1, a steam inlet hole 11 is arranged at the lower left end of the valve body casting 1, a steam filter chamber 12 is arranged at the upper end of the steam inlet hole 11, a steam through hole 121 is arranged at the upper right end of the steam filter chamber 12, a first valve chamber 14 is arranged at the upper end of the steam through hole 121, a steam outlet hole 13 is arranged at the upper end of the first valve chamber 14; a first valve core positioning groove 15 is arranged at the left end of the first valve core positioning groove 15, and a first valve stem through hole 16 is arranged at the left end of the first valve core positioning groove 15;

[0023] The valve body casting 1 is provided with a gas inlet hole 17 at the lower right end, a gas filter chamber 18 is provided at the upper end of the gas inlet hole 17, a gas through hole 181 is provided at the upper left end of the gas filter chamber 18, a second valve chamber 20 is provided at the upper end of the gas through hole 181, a gas outlet hole 19 is provided at the upper end of the second valve chamber 20, a second valve core positioning groove 21 is provided at the right end of the second valve core positioning groove 21, and a second valve stem through hole 22 is provided at the right end of the second valve core positioning groove 21;

[0024] A left mounting bracket 2 is integrally provided at the lower left end of the valve body casting 1 , and an upper mounting bracket 3 is integrally provided at the upper right end of the valve body casting 1 .

[0025] Preferably, the left mounting bracket 2 is provided with a plurality of first connecting through holes 210, and the upper mounting bracket 3 is provided with a plurality of second connecting through holes 310. The number of the first connecting through holes 210 and the number of the second connecting through holes 310 are both 2-4. The valve body casting 1 is integrally cast or assembled after being cast in parts.

[0026] In order to make the structural design of the utility model more reasonable, as a preference, the valve body casting 1 described in this embodiment is provided with an impurity storage groove 23 at the lower right end of the steam filter chamber 12, and a hydrophobic through hole 24 is provided at the lower end of the impurity storage groove 23.

[0027] The valve body casting 1 is provided with a first end cover groove 25 at the left end of the steam filter chamber 12, and the first end cover groove 25 is communicated with the steam filter chamber 12. The steam filter chamber 12 is used to install a steam filter device, and the first end cover groove 25 is used to install a left end cover, which can be connected to the steam filter device, facilitating the installation and maintenance of the steam filter device.

[0028] The valve body casting 1 is provided with a second end cover groove 26 at the right end of the gas filter chamber 18, and the second end cover groove 26 is communicated with the gas filter chamber 18. The gas filter chamber 18 is used to install a gas filter device, and the second end cover groove 26 is used to install a right end cover, which can be connected to the gas filter device, so as to facilitate the installation and maintenance of the gas filter device.

[0029] The lower end of the valve body casting 1 is integrally provided with a first connecting flange 27 aligned with the steam inlet hole 11, and the upper end of the valve body casting 1 is integrally provided with a second connecting flange 28 aligned with the steam outlet hole 11; the lower end of the valve body casting 1 is integrally provided with a third connecting flange 29 aligned with the gas inlet hole 17, and the upper end of the valve body casting 1 is integrally provided with a fourth connecting flange 30 aligned with the gas outlet hole 19.

[0030] The valve body casting 1 is made of stainless steel. A first valve core limiting groove 31 is provided at the right end of the first valve cavity 14 of the valve body casting 1 . A second valve core limiting groove 32 is provided at the left end of the second valve cavity 20 of the valve body casting 1 .

[0031] A chrome plating layer is provided on the outer surface of the valve body casting 1, and the thickness of the chrome plating layer is 0.12-50 μm.

[0032] In actual application, when the user needs to control the flow of steam and gas separately, only one valve body casting can be used. The main steam valve manufactured by the valve body casting of the utility model can effectively reduce the manufacturing cost and facilitate installation and maintenance;

[0033] Steam enters the steam filter chamber 12 from the steam inlet hole 11. The steam filter chamber 12 is used to install a steam filter device. After being filtered, the steam enters the first valve chamber 14 through the steam through hole 121. The first valve chamber 14 is used to install a first valve core. The first valve stem through hole 16 is used to install a first electric push rod. The first valve core is driven to move linearly by the first electric push rod, thereby realizing steam flow control. When the first valve core is opened, the steam can be discharged from the steam outlet hole 13.

[0034] The gas enters the gas filter chamber 18 from the gas inlet hole 17. The gas filter chamber 18 is used to install the gas filtering device. After being filtered, the gas enters the second valve chamber 20 through the gas through hole 181. The second valve chamber 20 is used to install the second valve core. The second valve stem through hole 22 is used to install the second electric push rod. The second valve core is driven to move linearly by the second electric push rod, thereby realizing the control of the gas flow. When the second valve core is opened, the gas can be discharged from the gas outlet hole 19.

[0035] The utility model is suitable for a gas-steam combined heat and power cogeneration steam turbine unit and has good practicability.

[0036] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. A main steam valve steel casting for a gas-steam combined heat and power cogeneration steam turbine unit, comprising a valve body casting (1), characterized in that: The valve body casting (1) is provided with a steam inlet hole (11) at the lower left end, a steam filter chamber (12) is provided at the upper end of the steam inlet hole (11), a steam through hole (121) is provided at the upper right end of the steam filter chamber (12), a first valve chamber (14) is provided at the upper end of the steam through hole (121), a steam outlet hole (13) is provided at the upper end of the first valve chamber (14); a first valve core positioning groove (15) is provided at the left end of the first valve core positioning groove (15), and a first valve stem through hole (16) is provided at the left end of the first valve core positioning groove (15); A gas inlet hole (17) is provided at the lower right end of the valve body casting (1), a gas filter chamber (18) is provided at the upper end of the gas inlet hole (17), a gas through hole (181) is provided at the upper left end of the gas filter chamber (18), a second valve chamber (20) is provided at the upper end of the gas through hole (181), a gas outlet hole (19) is provided at the upper end of the second valve chamber (20), a second valve core positioning groove (21) is provided at the right end of the second valve core positioning groove (21), and a second valve stem through hole (22) is provided at the right end of the second valve core positioning groove (21); A left mounting bracket (2) is integrally provided at the lower left end of the valve body casting (1), and an upper mounting bracket (3) is integrally provided at the upper right end of the valve body casting (1).

2. A main steam valve steel casting for a gas-steam combined heat and power cogeneration steam turbine unit according to claim 1, characterized in that: The valve body casting (1) is provided with an impurity storage groove (23) at the lower right end of the steam filter chamber (12), and a hydrophobic through hole (24) is provided at the lower end of the impurity storage groove (23).

3. The main steam valve steel casting of a gas-steam combined heat and power cogeneration steam turbine unit according to claim 2 is characterized in that: The valve body casting (1) is provided with a first end cover groove (25) at the left end of the steam filter chamber (12), and the first end cover groove (25) is communicated with the steam filter chamber (12).

4. A main steam valve steel casting for a gas-steam combined heat and power cogeneration steam turbine unit according to claim 3, characterized in that: The valve body casting (1) is provided with a second end cover groove (26) at the right end of the gas filter chamber (18), and the second end cover groove (26) is communicated with the gas filter chamber (18).

5. The main steam valve steel casting of a gas-steam combined heat and power cogeneration steam turbine unit according to claim 4, characterized in that: A first connecting flange (27) is integrally provided at the lower end of the valve body casting (1) and aligned with the steam inlet hole (11), and a second connecting flange (28) is integrally provided at the upper end of the valve body casting (1) and aligned with the steam outlet hole (11); a third connecting flange (29) is integrally provided at the lower end of the valve body casting (1) and aligned with the gas inlet hole (17), and a fourth connecting flange (30) is integrally provided at the upper end of the valve body casting (1) and aligned with the gas outlet hole (19).

6. A main steam valve steel casting for a gas-steam combined heat and power cogeneration steam turbine unit according to claim 5, characterized in that: The valve body casting (1) is made of stainless steel. The valve body casting (1) is provided with a first valve core limiting groove (31) at the right end of the first valve cavity (14), and the valve body casting (1) is provided with a second valve core limiting groove (32) at the left end of the second valve cavity (20).

7. A main steam valve steel casting for a gas-steam combined heat and power cogeneration steam turbine unit according to claim 1 or 6, characterized in that: A chrome plating layer is provided on the outer surface of the valve body casting (1), and the thickness of the chrome plating layer is 0.12-50 μm.

8. The main steam valve steel casting of a gas-steam combined heat and power cogeneration steam turbine unit according to claim 7, characterized in that: The left mounting bracket (2) is provided with a plurality of first connecting through holes (210), and the upper mounting bracket (3) is provided with a plurality of second connecting through holes (310).

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