Double valve control mounted compressor casing

Abstract

The present invention belongs to the technical field of compressor equipment, and relates to a double-valve controlled inlaid compressor casing, including a compressor casing body, a double air intake groove structure positioned in the air intake passage of the compressor casing body, the double air intake groove structure adopts a compressor casing slotted bushing, a guide portion is arranged on the air intake side of the air intake passage of the compressor casing body, a gap is arranged between the air intake end of the compressor casing slotted bushing and the guide portion; a first air intake chute is arranged at the portion of the guide portion close to the compressor casing slotted bushing, and a second air intake chute is arranged on the circumferential surface of the compressor casing slotted bushing; a compressor casing air intake passage pressure relief hole is arranged at the air intake end of the compressor casing body. The compressor casing is provided with an air intake pressure relief structure, and a pressure relief valve can be arranged on the flange of the air intake bypass pressure relief hole; a screw hole is also arranged on the outer shape of the compressor casing body to communicate with the compressor casing inner cavity, and the pressure in the compressor casing inner cavity is used to control the operation of another valve through the screw hole of the valve.

Description

Technical Field

[0001] The invention belongs to the technical field of compressor equipment and relates to a double-valve controlled inlaid compressor casing. Background Art

[0002] The country regards gas engines as a new energy source, and one of the energy sources that meet the National VI emission standards for engines. Without installing a turbocharger on a traditional gas engine, it will not meet the National VI emission standards. Therefore, under this industry demand, the gas turbocharger device was created.

[0003] Since the exhaust temperature of gas engines is as high as 850°C and the exhaust temperature of traditional diesel engines is 700°C, the exhaust gas of gas engines is highly corrosive to the turbocharger turbine shell products. Traditional materials can no longer meet the product life requirements, and "detonation" will occur during the operation of gas engines.

[0004] This patent is mainly to solve the detonation phenomenon of turbocharger matching gas engine while increasing the compressor surge margin by about 15%. Summary of the invention

[0005] In view of the above problems, the present invention provides a double-valve controlled inlaid compressor casing, in which different positions and different control functions of pressure relief valves are arranged.

[0006] According to the technical solution of the present invention: a double-valve controlled inlaid compressor casing comprises a compressor casing body, a double inlet groove structure is positioned and arranged in the inlet passage of the compressor casing body, and is characterized in that: the double inlet groove structure adopts a compressor casing grooved bushing, a guide portion is arranged on the inlet side of the inlet passage of the compressor casing body, and a gap is arranged between the inlet end of the compressor casing grooved bushing and the guide portion;

[0007] A first air intake chute is arranged at a portion of the guide portion close to the compressor casing grooved bushing, and a second air intake chute is arranged on a circumferential surface of the compressor casing grooved bushing;

[0008] The air inlet end of the compressor casing body is provided with a compressor casing air inlet duct pressure relief hole, the compressor casing grooved liner is provided with a liner pressure relief hole, and the liner pressure relief hole is connected with the compressor casing air inlet duct pressure relief hole;

[0009] The circumferential surface of the shell outlet pipe of the compressor shell body is provided with an air inlet hole for the air release valve.

[0010] As a further improvement of the present invention, the compressor casing grooved bushing and the compressor casing body are limited by a positioning step, and the compressor casing grooved bushing and the compressor casing body are fixed by a plurality of positioning pins evenly distributed around the circumference.

[0011] As a further improvement of the present invention, the outlet end of the compressor casing grooved bushing is constructed as a conical expansion structure.

[0012] As a further improvement of the present invention, the angle between the first air intake chute and the second air intake chute and the air intake direction is in the range of 25 to 35 degrees.

[0013] As a further improvement of the present invention, the compressor casing grooved bushing is cooperatively connected with an upper bushing and a lower bushing, and the upper bushing and the lower bushing are connected by upper and lower bushing connecting ribs.

[0014] As a further improvement of the present invention, 3 to 5 upper and lower liner connecting ribs are provided.

[0015] As a further improvement of the present invention, an inclined surface is provided on the axial air inlet side end surface of the compressor casing grooved bushing.

[0016] As a further improvement of the present invention, an airflow space is formed between the circumferential surface of the compressor casing grooved liner corresponding to the portion between the second intake chute and the intake side end surface and the compressor casing body.

[0017] The technical effect of the present invention is that the product structure of the present invention is reasonable and ingenious, and by arranging a double air inlet groove structure in the shell, it is ensured that during operation, the high temperature zone of the shell works stably without deformation, creep or cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a cross-sectional view along the air inlet of the present invention.

[0020] Figure 3 It is a schematic end view of the grooved bushing of the compressor casing of the present invention.

[0021] Figure 4 for Figure 3 AA section view.

[0022] Figure 5 for Figure 3 Schematic diagram of direction B. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figures 1 to 5 It includes a compressor casing body 1, a compressor casing grooved bushing 2, a slope 2-1, a pressure relief hole 4, an air release valve air inlet hole 5, a first air inlet chute 6, a second air inlet chute 7, an upper bushing 8, a lower bushing 9, upper and lower bushing connecting ribs 10, a bushing pressure relief hole 11, etc.

[0025] like Figures 1 to 5As shown, the present invention is a double-valve controlled inlaid compressor casing, comprising a compressor casing body 1, a double air inlet groove structure is positioned and arranged in the air inlet passage of the compressor casing body 1, the double air inlet groove structure adopts a compressor casing grooved bushing 2, and a guide portion 1-1 is arranged on the air inlet side of the air inlet passage of the compressor casing body 1. It can be understood that the surface of the guide portion 1-1 is in a circular arc transition, and a gap is arranged between the air inlet end of the compressor casing grooved bushing 2 and the guide portion 1-1.

[0026] like Figure 2 As shown, a first air intake chute 6 is provided at a portion of the guide portion 1 - 1 close to the compressor casing grooved liner 2 , and a second air intake chute 7 is provided on the circumferential surface of the compressor casing grooved liner 2 .

[0027] like Figure 1 , 4 As shown, a compressor casing inlet duct pressure relief hole 4 is provided at the air inlet end of the compressor casing body 1, and a sleeve pressure relief hole 11 is provided on the compressor casing grooved sleeve 2. The sleeve pressure relief hole 11 is connected with the compressor casing inlet duct pressure relief hole 4 to realize the pressure relief operation of the compressor casing body 1 during operation.

[0028] The circumferential surface of the casing outlet pipe of the compressor casing body 1 is provided with an air release valve air inlet hole 5 .

[0029] like Figure 2 As shown, further, in order to achieve reliable and stable positioning of the compressor casing grooved bushing 2 in the compressor casing body 1, the compressor casing grooved bushing 2 and the compressor casing body 1 are limited by a positioning step, and the compressor casing grooved bushing 2 and the compressor casing body 1 are fixed by a number of positioning pins 3 evenly distributed around the circumference.

[0030] The outlet end of the compressor casing grooved bushing 2 is constructed as a conical expansion structure to achieve efficient discharge of airflow during operation.

[0031] An airflow space is formed between the compressor casing body 1 and the circumferential surface of the compressor casing grooved liner 2 corresponding to the portion between the second intake chute 7 and the intake side end surface.

[0032] Furthermore, in specific practice, after repeated tests and comparisons, the air intake directions of the first air intake chute 6 and the second air intake chute 7 are preferably designed as follows: the angle range between the first air intake chute 6 and the second air intake chute 7 and the air intake direction is 25 to 35 degrees; at the same time, the first air intake chute 6 and the second air intake chute 7 are connected to each other via the air flow space between the compressor casing grooved bushing 2 and the inner wall of the compressor casing body 1.

[0033] The compressor casing grooved bushing 2 is matched with an upper bushing 8 and a lower bushing 9, and the upper bushing 8 and the lower bushing 9 are connected by upper and lower bushing connecting ribs 10. In order to realize a reliable and stable connection between the upper bushing 8, the lower bushing 9 and the compressor casing grooved bushing 2, in specific production practice, 3 to 5 upper and lower bushing connecting ribs 10 are provided.

[0034] An inclined surface 2 - 1 is provided on the axial air intake side end surface of the compressor casing grooved bushing 2 , and the inclined surface 2 - 1 is parallel to the direction of the first air intake inclined slot 6 .

[0035] One point that needs to be noted in production practice is that when the compressor casing grooved bushing 2 is inserted into the compressor casing body 1, it is necessary to ensure that the compressor casing inlet duct pressure relief hole 4 is aligned with the bushing pressure relief hole 11.

[0036] The product of the present invention can effectively apply to the National VI emission standards. According to the national regulations on fuel and gas vehicle engine exhaust emissions, the National VI energy conservation and emission reduction environmental protection standards will be implemented in major large and medium-sized cities in China on July 1, 2019. Among them, gas (using alkane, etc.) engines are one of the solutions to meet the National VI emission standards. However, due to the high combustion and exhaust temperatures and high explosion pressure of gas engines, new requirements are put forward for traditional superchargers (materials and product structures).

[0037] The product of the present invention is designed to target gas engines with knocking phenomena and meet the requirements of the National VI energy-saving and environmentally friendly emission standards.

[0038] The compressor housing of the turbocharger of this technology adopts a double-flow channel structure for air intake, and the compressor housing adopts a double valve structure for controlling the performance of the turbocharger and preventing the detonation phenomenon of the gas engine.

Claims

1. A double-valve controlled inlaid compressor casing, comprising a compressor casing body (1), wherein a double air inlet groove structure is positioned in an air inlet passage of the compressor casing body (1), and characterized in that: The double air inlet groove structure adopts a compressor casing grooved bushing (2), a guide portion (1-1) is provided on the air inlet side of the air inlet passage of the compressor casing body (1), and a gap is provided between the air inlet end of the compressor casing grooved bushing (2) and the guide portion (1-1); A first air intake chute (6) is arranged at a position of the guide portion (1-1) close to the compressor casing grooved bushing (2), and a second air intake chute (7) is arranged on the circumferential surface of the compressor casing grooved bushing (2); A compressor case inlet duct pressure relief hole (4) is provided at the air inlet end of the compressor case body (1), a compressor case grooved bushing (2) is provided with a bushing pressure relief hole (11), and the bushing pressure relief hole (11) is connected to the compressor case inlet duct pressure relief hole (4); An air release valve air inlet hole (5) is provided on the circumferential surface of the casing outlet pipe of the compressor casing body (1); The first air intake chute (6) and the second air intake chute (7) form an angle in the range of 25 to 35 degrees with the air intake direction; The compressor casing grooved bushing (2) is cooperatively connected with an upper bushing (8) and a lower bushing (9), and the upper bushing (8) and the lower bushing (9) are connected via upper and lower bushing connecting ribs (10); The upper and lower lining connection ribs (10) are provided with 3 to 5 ribs; The axial air intake side end surface of the compressor casing grooved bushing (2) is provided with an inclined surface (2-1), and the inclined surface (2-1) is parallel to the direction of the first air intake inclined groove (6); An airflow space is formed between the circumferential surface of the compressor casing grooved bushing (2) corresponding to the portion between the second air inlet chute (7) and the air inlet side end surface and the compressor casing body (1), and the first air inlet chute (6) and the second air inlet chute (7) are connected via the airflow space between the compressor casing grooved bushing (2) and the inner wall of the compressor casing body (1).

2. The double valve control mounted compressor casing according to claim 1, characterized in that: The compressor casing grooved bushing (2) and the compressor casing body (1) are limited by a positioning step, and the compressor casing grooved bushing (2) and the compressor casing body (1) are fixed by a plurality of positioning pins (3) evenly distributed around the circumference.

3. The double valve control mounted compressor casing according to claim 1, characterized in that: The gas outlet end of the compressor casing grooved bushing (2) is configured as a conical expansion structure.

Images