Fuel gas pressure regulating and boosting combined control device

Abstract

The utility model belongs to the technical field of fuel gas peak regulation power plants, and particularly relates to a fuel gas pressure regulating and boosting combined control device which comprises a case. A pressure regulating station is installed at the bottom of an inner cavity of the machine box, the bottom of the left side of the pressure regulating station communicates with an air inlet pipe, the left end of the air inlet pipe penetrates through the machine box and extends leftwards, the right side of the pressure regulating station communicates with an air outlet pipe, and the right end of the air outlet pipe penetrates through the machine box and is connected with a supercharger. Through the structural design of a first pressure sensor, a second pressure sensor, a fixed plate, an electric telescopic rod, a movable plate, a movable rod, a lifting plate, a movable rod and a check block, the channel size of a through groove and the pressure of fuel gas are adjusted by adjusting the height of the check block, and the pressure of the fuel gas is adjusted through comprehensive linkage control of a pressure adjusting station, a supercharger and a gas turbine. The output pressure value can be automatically adjusted according to the pipe network incoming gas pressure, so that the pipe network excess pressure is utilized to the maximum extent, the pressure of gas entering the supercharger is improved, and the operation energy consumption of the supercharger is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas peak shaving power plant, specifically is a kind of gas pressure regulating pressurization combined control device. BACKGROUND

[0002] At present, the main purpose of the cooperation of gas power plant pressure regulating station and booster is to maintain the normal operation and safety of gas turbine, and the reason that natural gas pressure regulating station is regulated pressure and then pressurized is that the process of regulating pressure and pressurizing is in order, if high-pressure natural gas is directly sent into booster, booster cannot work normally because of excessive load, and it also causes damage to equipment, and the high-pressure natural gas is first reduced to a certain range, and then the low-pressure natural gas is pressurized to the pressure required by gas turbine by booster, so that the normal operation and stable output of gas turbine can be ensured.

[0003] However, the existing gas pressure regulating station and booster of gas peak shaving power plant are designed as two independent systems, without system joint optimization design and control, the allowable pressure change range of pressure regulating station after pressure regulating is particularly small, and the allowable inlet gas pressure fluctuation value of booster is also very small, and the gas supply pressure of natural gas pipeline network fluctuates at different times, in order to ensure the normal operation of gas turbine, the output pressure of pressure regulating station is generally designed according to the minimum gas supply pressure, and the excess pressure of more natural gas is consumed by pressure regulating station, and booster is also required to pressurize the gas pressure, so that the process of first reducing pressure and then increasing pressure has large energy loss, therefore, the gas pressure regulating pressurization combined control device is proposed for the above problems. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is that the allowable pressure change range of pressure regulating station after pressure regulating is particularly small in the prior art, and there is the defect of large energy loss, therefore, the gas pressure regulating pressurization combined control device is proposed.

[0005] The technical scheme adopted by the utility model to solve the technical problem is that a gas pressure regulating pressurization combined control device comprises a machine box, a pressure regulating station is installed at the bottom of the inner cavity of the machine box, an air inlet pipe is communicated with the bottom of the left side of the pressure regulating station, the left end of the air inlet pipe penetrates through the machine box and extends to the left, an air outlet pipe is communicated with the right side of the pressure regulating station, the right end of the air outlet pipe penetrates through the machine box and is connected with a booster, an exhaust pipe is communicated with the air outlet of the booster, and the right end of the exhaust pipe is connected with a gas turbine, a pressure regulating assembly is arranged in the inner cavity of the booster, a first pressure sensor is installed at the bottom of the right side of the inner cavity of the pressure regulating station, and a second pressure sensor is installed on the left side of the pressure regulating station.

[0006] As preferred, the pressure regulating assembly comprises a fixed plate, an electric telescopic rod, a moving plate, a movable rod, a lifting plate, a moving rod and a stopper, the inner cavity of the pressure regulating station is provided with the fixed plate, the top of the fixed plate is sequentially provided with a through slot from left to right, the right side of the top of the inner cavity of the pressure regulating station is fixedly connected with the electric telescopic rod, the output end of the electric telescopic rod is fixedly connected with the moving plate, the front face and the back face of the bottom of the moving plate are both hingedly connected with the movable rod through a movable seat, the bottom end of the movable rod is hingedly connected with the lifting plate through a movable seat, the bottom of the lifting plate is sequentially fixedly connected with the moving rod from left to right, the bottom of the moving rod is fixedly connected with the stopper, the bottom of the stopper penetrates into the inner cavity of the through slot, the surface of the stopper is matched with the inner cavity of the through slot, and the first pressure sensor and the second pressure sensor are located above and below the fixed plate respectively.

[0007] As preferred, the top front face and the back face of the inner cavity of the pressure regulating station are both fixedly connected with a box body, the two sides of the inner cavity of the box body are both provided with a first sliding groove, the inner cavity of the first sliding groove is slidably connected with a first sliding block, and the side opposite to the first sliding block is fixedly connected with a connecting rod.

[0008] As preferred, the top of the inner cavity of the pressure regulating station is provided with a second sliding groove, the inner cavity of the second sliding groove is slidably connected with a second sliding block, and the bottom of the second sliding block is fixedly connected with the top of the moving plate.

[0009] As preferred, the bottom of the lifting plate is bonded with a sealing gasket, and the periphery of the sealing gasket is in contact with the inner wall of the pressure regulating station.

[0010] As preferred, the top of the case is provided with an access hole, and the top of the case is threadedly connected with a sealing cover through bolts.

[0011] The utility model discloses beneficial effect is:

[0012] 1. The utility model discloses a structure design of first pressure sensor, second pressure sensor, fixed plate, electric telescopic rod, moving plate, movable rod, lifting plate, moving rod and stopper, the height of stopper is adjusted, thereby the channel size of through slot is adjusted, the pressure of fuel gas is adjusted, through the comprehensive linkage control of pressure regulating station, booster and gas turbine, can according to the automatic adjustment output pressure value of pipe network to come pressure, to maximize the utilization of pipe network residual pressure, improve the fuel gas pressure of booster, reduce the operation energy consumption of booster;

[0013] 2. The utility model discloses a structure design of box body, connecting rod, first sliding groove and first sliding block, is convenient for to the positioner of lifting plate, assists lifting plate to move. ACCURACY

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only constitute some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0016] Figure 2 It is a structure sectional view of the case of the present application.

[0017] Figure 3 It is a structure sectional view of the case of the present application.

[0018] Figure 4 It is a structure sectional view of the case of the present application.

[0019] Figure 5 It is a structure sectional view of the case of the present application.

[0020] In the figure: 1, case; 2, pressure regulating station; 3, booster; 4, gas turbine; 5, pressure regulating assembly; 51, fixed plate; 52, electric telescopic rod; 53, moving plate; 54, movable rod; 55, lifting plate; 56, moving rod; 57, stop block; 6, first pressure sensor; 7, second pressure sensor; 8, box body; 9, first sliding groove; 10, first sliding block; 11, connecting rod; 12, second sliding groove; 13, second sliding block; 14, sealing gasket; 15, sealing cover. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0022] The following will be described in detail with reference to the drawings in the embodiments of the present application. Figures 1-5 The present application will be described in further detail,

[0023] The embodiments of the present application disclose a gas pressure regulating and boosting combined control device. With reference to the drawings, Figure 1 , Figure 2 and Figure 3The utility model provides a kind of gas pressure regulating pressure boosting combined control device, including cabinet 1;The bottom of the inner chamber of cabinet 1 is equipped with pressure regulating station 2, the bottom of the left side of pressure regulating station 2 is communicated with air inlet pipe, and the left end of air inlet pipe penetrates cabinet 1 and extends to left, the right side of pressure regulating station 2 is communicated with air outlet pipe, and the right end of air outlet pipe penetrates cabinet 1 and is connected with pressure booster 3, the air outlet of pressure booster 3 is communicated with exhaust pipe, and the right end of exhaust pipe is connected with gas turbine 4, the inner chamber of pressure booster 3 is provided with pressure regulating assembly 5, the bottom of the right side of the inner chamber of pressure regulating station 2 is equipped with first pressure sensor 6, and the left side of pressure regulating station 2 is equipped with second pressure sensor 7;Electric telescopic rod 52, first pressure sensor 6 and second pressure sensor 7 are all externally connected with controller, when pipe network actual air pressure P1>P+0.2Mpa digital adjustable, and duration>30min, comprehensive linkage control device exports pressure regulating station target output pressure Pt as P1-0.1MPa digital adjustable, but Pt value cannot be greater than pressure booster 3 maximum allowable intake pressure Pz1, if greater, then Pt=Pz1;When pipe network actual air pressure P1 is greater than P+0.1Mpa, less than P+0.2Mpa, then Pt is P-0.1MPa digital adjustable;When pipe network actual air pressure P1 is less than P+0.1Mpa, then Pt is P-0.1MPa digital adjustable.

[0024] Referring to Figure 3 And Figure 4 Pressure regulating assembly 5 includes fixed plate 51, electric telescopic rod 52, moving plate 53, movable rod 54, lifting plate 55, moving rod 56 and stop block 57, the inner chamber of pressure regulating station 2 is equipped with fixed plate 51, the top of fixed plate 51 is sequentially provided with through slot from left to right, the right side of the top of the inner chamber of pressure regulating station 2 is fixedly connected with electric telescopic rod 52, the output end of electric telescopic rod 52 is fixedly connected with moving plate 53, the front and back of the bottom of moving plate 53 are hingedly connected with movable rod 54 through movable seat, the bottom end of movable rod 54 is hingedly connected with lifting plate 55 through movable seat, the bottom of lifting plate 55 is sequentially fixedly connected with moving rod 56 from left to right, the bottom of moving rod 56 is fixedly connected with stop block 57, the bottom of stop block 57 penetrates to the inner chamber of through slot, the surface of stop block 57 is matched with the inner chamber of through slot, and first pressure sensor 6 and second pressure sensor 7 are located above and below fixed plate 51 respectively;By adjusting the height of stop block 57, the size of the passage of through slot is adjusted, the pressure of gas is adjusted, and through the comprehensive linkage control of pressure regulating station 2, pressure booster 3 and gas turbine 4, the output pressure value can be automatically adjusted according to pipe network air pressure, to maximize the use of pipe network residual pressure, improve the gas pressure of pressure booster 3, reduce the operating energy consumption of pressure booster 3.

[0025] Referring to Figure 4 And Figure 5The top of the inner cavity of the pressure regulating station 2 is provided with a second sliding groove 12, and the inner cavity of the second sliding groove 12 is slidably connected with a second sliding block 13, and the bottom of the second sliding block 13 is fixedly connected with the top of the moving plate 53; the moving plate 53 is limited, the moving plate 53 is assisted to move, and the stability of the moving plate 53 is improved.

[0026] With reference to Figure 3 The top of the inner cavity of the pressure regulating station 2 is provided with a second sliding groove 12, and the inner cavity of the second sliding groove 12 is slidably connected with a second sliding block 13, and the bottom of the second sliding block 13 is fixedly connected with the top of the moving plate 53; the moving plate 53 is limited, the moving plate 53 is assisted to move, and the stability of the moving plate 53 is improved.

[0027] With reference to Figure 3 And Figure 4 The bottom of the lifting plate 55 is attached with a sealing gasket 14, and the periphery of the sealing gasket 14 is in contact with the inner wall of the pressure regulating station 2; the sealing property of the lifting plate 55 is improved, and the gas is prevented from entering the upper part of the lifting plate 55.

[0028] With reference to Figure 2 And Figure 3 The top of the machine box 1 is provided with an inspection hole, and the top of the machine box 1 is threadedly connected with a sealing cover 15; the pressure regulating station 2 is maintained conveniently.

[0029] Working principle: when in use, the first pressure sensor 6 can detect the pipe network gas pressure entering the pressure regulating station 2, and the second pressure sensor 7 can detect the gas pressure when being discharged; when the output gas pressure needs to be adjusted, the user starts the electric telescopic rod 52, the electric telescopic rod 52 drives the moving plate 53 to move leftwards, the moving plate 53 drives the movable rod 54 to rotate, so that the movable rod 54 drives the lifting plate 55 to move downwards, and then the lifting plate 55 drives the moving rod 56 to move downwards, the moving rod 56 drives the stop block 57 to move downwards, the size of the through slot is adjusted, and then the output gas pressure is adjusted; the output pressure value can be automatically adjusted according to the pipe network gas pressure, the pipe network residual pressure is maximized, the gas pressure of the booster 3 is improved, and the operation energy consumption of the booster 3 is reduced.

[0030] The basic principle, main characteristics and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model.

Claims

1. A combined control device for gas pressure regulation and boosting, characterized in that: Includes a chassis (1); a pressure regulating station (2) is installed at the bottom of the inner cavity of the chassis (1), an air inlet pipe is connected to the bottom left side of the pressure regulating station (2), and the left end of the air inlet pipe passes through the chassis (1) and extends to the left, an air outlet pipe is connected to the right side of the pressure regulating station (2), and the right end of the air outlet pipe passes through the chassis (1) and is connected to a booster (3), an exhaust pipe is connected to the outlet of the booster (3), and a gas turbine (4) is connected to the right end of the exhaust pipe, a pressure regulating component (5) is provided in the inner cavity of the booster (3), a first pressure sensor (6) is installed at the bottom right side of the inner cavity of the pressure regulating station (2), and a second pressure sensor (7) is installed on the left side of the pressure regulating station (2).

2. The gas pressure regulating and boosting combined control device according to claim 1, characterized in that: The pressure regulating assembly (5) includes a fixed plate (51), an electric telescopic rod (52), a movable plate (53), a movable rod (54), a lifting plate (55), a movable rod (56), and a stop block (57). The fixed plate (51) is installed in the inner cavity of the pressure regulating station (2). The top of the fixed plate (51) is provided with through slots from left to right. The electric telescopic rod (52) is fixedly connected to the right side of the top of the inner cavity of the pressure regulating station (2). The movable plate (53) is fixedly connected to the output end of the electric telescopic rod (52). The bottom of the movable plate (53) is... Both the front and back sides are hinged with movable rods (54) via movable seats. The bottom end of the movable rods (54) is hinged with a lifting plate (55) via a movable seat. The bottom of the lifting plate (55) is fixedly connected with moving rods (56) from left to right. The bottom of the moving rods (56) is fixedly connected with a stop block (57). The bottom of the stop block (57) extends through the inner cavity of the through groove. The surface of the stop block (57) is adapted to the inner cavity of the through groove. The first pressure sensor (6) and the second pressure sensor (7) are located above and below the fixed plate (51), respectively.

3. The gas pressure regulating and boosting combined control device according to claim 2, characterized in that: The pressure regulating station (2) has a box body (8) fixedly connected to both sides of the top front and back of the inner cavity. The box body (8) has a first sliding groove (9) on both sides of the inner cavity. The inner cavity of the first sliding groove (9) is slidably connected to a first slider (10). A connecting rod (11) is fixedly connected to the opposite side of the first slider (10). The bottom of the connecting rod (11) passes through the box body (8) and is fixedly connected to the top of the lifting plate (55).

4. The gas pressure regulating and boosting combined control device according to claim 2, characterized in that: The top of the inner cavity of the pressure regulating station (2) is provided with a second slide groove (12), and a second slider (13) is slidably connected to the inner cavity of the second slide groove (12). The bottom of the second slider (13) is fixedly connected to the top of the moving plate (53).

5. A combined control device for gas pressure regulation and boosting according to claim 2, characterized in that: A sealing gasket (14) is bonded to the bottom of the lifting plate (55), and the sealing gasket (14) is in contact with the inner wall of the pressure regulating station (2) around its perimeter.

6. The gas pressure regulating and boosting combined control device according to claim 1, characterized in that: The top of the chassis (1) is provided with an inspection port, and the top of the chassis (1) is connected to a sealing cover (15) by bolts.

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