CN204851598U - Special type gas compressor pneumatic valve - Google Patents

Abstract

Special gas compressor valves, related to piston natural gas compressors, can be used in the field of natural gas compression processing, including valve seats, lift limiters, valve plates, valve covers, springs, connecting screw rods on one side of the valve seats, valve covers It is sleeved on the screw rod and locked by a nut. The lift limiter is one and ring-shaped, and the lift limiter is sleeved on the screw rod; the number of valve discs is one and is ring-shaped, and the valve disc is sleeved on the lift On the stroke limiter, the valve plate and the lift limiter are both arranged between the valve seat and the valve cover; the side of the valve cover facing the valve plate is provided with four spring grooves along the circumferential direction, and there are four springs, and the four springs are set on In the corresponding spring groove, one end of each spring is pressed against the valve plate; the valve cover, the valve plate and the valve seat are connected by positioning pins. The utility model has the following characteristics: 1. Prolong the service life of the air valve and reduce the number of equipment maintenance; 2. Reasonably improve the structure of the air valve to facilitate the daily maintenance of the air valve; 3. Reduce the labor intensity of employees.

Description

Special gas compressor valve

technical field

The utility model relates to a piston type natural gas compressor, which can be applied to the field of natural gas compression processing.

Background technique

During the use of the natural gas compressor, the valve spring fails, the lift limiter is damaged, the valve plate is broken and deformed, and the sealing surface of the valve seat is worn to varying degrees, resulting in the leakage and damage of the gas valve, which affects the working efficiency of the natural gas compressor. Replacement The cost of new gas valves is not only high, but frequent replacement and maintenance of gas valves increases the labor intensity of the team, seriously affects normal production, and reduces the output of natural gas and light oil.

Disadvantages of using existing air valves:

1) The lift limiter of the air valve is worn out. Eight lift limiters are evenly distributed on the inner and outer rings of the original valve cover. More, severe wear and tear.

2) The spring fails. There are 8 springs evenly distributed on the inner and outer rings of the valve cover of the original gas valve. The force of the spring changes, causing the spring to break and the elasticity to change, and the probability of spring failure is relatively high.

3) The valve plate is broken and deformed. Since the valve plate is a double valve plate, after the wear of the lift limiter and the failure of the spring, the valve plate will be skewed and stuck, which will cause the change of the working condition of the valve plate, uneven force on the valve plate, and open , The closing impact becomes larger, and it is easy to cause deformation and fracture of the valve plate in a short time.

Contents of the invention

The purpose of this utility model is to provide a special gas compressor valve with long service life in order to overcome the deficiencies of the prior art.

The purpose of this utility model is achieved in this way: the special gas compressor gas valve includes a valve seat, a lift limiter, a valve plate, a valve cover, and a spring, and a screw rod is connected to one side of the valve seat, and the valve cover is sleeved on the screw rod And locked by a nut, the number of the lift limiter is one and is ring-shaped, and the lift limiter is sleeved on the screw rod; the number of the valve plate is one and is ring-shaped, and the valve plate is sleeved on the lift On the limiter, the valve plate and the lift limiter are both arranged between the valve seat and the valve cover; the side of the valve cover facing the valve plate is provided with four spring grooves along the circumferential direction, and the springs have four, four The springs are arranged in the corresponding spring grooves, and one end of each spring is pressed against the valve plate; the valve cover, the valve plate and the valve seat are connected by positioning pins.

In the utility model, by changing the shape of the lift limiter, the 8 lift limiters evenly distributed around the original gas valve are changed into an annular limiter, which is set on the screw rod of the valve seat to play a limiting role. The improved The limiter reduces the contact area. Reduce the number of springs and change the shape of the springs. After the improvement, the air valve has changed from 8 springs to 4 springs, which reduces wear and protects the valve plate and the air valve. The structure of the previous valve discs has been changed, and the double valve discs have become single valve discs, which ensures that the valve can maintain its own movement track after some springs fail, and at the same time reduce the wear and tear of the double valve discs due to asynchronous movement.

The utility model has the following characteristics:

1. Extend the service life of the air valve and reduce the number of equipment maintenance;

2. Reasonably improve the structure of the air valve to facilitate the daily maintenance of the air valve;

3. Reduce the labor intensity of employees.

As an improvement of the utility model, the thickness of the annular lift limiter is greater than that of the annular valve plate.

In order to prevent the springs from slipping during installation, the diameter of the end of each spring in contact with the valve plate is smaller than the diameter of the end in contact with the valve cover.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Detailed ways

As shown in Figure 1, the special gas compressor air valve includes a valve seat 1, a screw 7 is connected to one side of the valve seat 1, and a ring-shaped lift limiter 2 is sleeved on the screw 7. An annular valve plate 3 is sleeved on the device 2, the thickness of the annular lift limiter 2 is greater than the thickness of the annular valve plate 3, the valve cover 4 is sleeved on the screw rod 7 and locked by a nut 8, the valve cover 4 , valve plate 3, and valve seat 1 are connected by positioning pin 9. Both the valve plate 3 and the lift limiter 2 are arranged between the valve seat 1 and the valve cover 4, and the side of the valve cover 4 facing the valve plate 3 is provided with four spring grooves 5 along the circumferential direction, and each of the four spring grooves 5 is provided with A spring 6, one end of each spring 6 is pressed against the valve plate 3, and the diameter of the end of each spring 6 in contact with the valve plate 3 is smaller than the diameter of the end in contact with the valve cover 4.

Claims (3)

1. The valve of special gas compressor includes valve seat, lift limiter, valve plate, valve cover and spring. The screw rod is connected to one side of the valve seat. The valve cover is sleeved on the screw rod and locked by the nut. The feature is that: the number of the lift limiter is one and is ring-shaped, and the lift limiter is sleeved on the screw rod; the number of the valve plate is one and is ring-shaped, and the valve plate is sleeved on the lift limiter, Both the valve plate and the lift limiter are arranged between the valve seat and the valve cover; the side of the valve cover facing the valve plate is provided with four spring grooves along the circumferential direction, and there are four springs, and the four springs are arranged on the corresponding One end of each spring presses against the valve plate in the spring groove; the valve cover, valve plate and valve seat are connected by positioning pins. 2. The special gas compressor valve according to claim 1, characterized in that: the thickness of the annular lift limiter is greater than the thickness of the annular valve plate. 3. The special gas compressor valve according to claim 1, characterized in that: the diameter of the end of each spring in contact with the valve plate is smaller than the diameter of the end in contact with the valve cover.