CN204738957U - New combined valve body type water injection pump - Google Patents

Abstract

The utility model relates to high-pressure water injection equipment in an oil field, in particular to a novel combined valve body type water injection pump, which belongs to the technical field of high-pressure water injection pumps. It includes a fixed seat, a pump head body, a combined valve body, a liquid inlet flow channel, a pump head gland, a liquid discharge valve piece, a screw, a spring seat, a liquid discharge flow channel, a liquid inlet valve piece, and a reciprocating plunger. The pump head body is installed on the fixed seat, the pump head gland is connected to the output end of the pump head body, the combined valve body is installed in the pump head body with interference, the liquid inlet channel and the liquid discharge flow channel The channel is opened in the inner cavity of the combined valve body, the drain valve plate and the liquid inlet valve plate are respectively closely attached to the drain port and the liquid inlet port of the combined valve body, the screw threads are installed in the center of the combined valve body, and the spring seats are respectively Installed on the two ends of the screw and tightly press the liquid inlet valve plate and the liquid discharge valve plate, the reciprocating plunger is connected to the power end. It overcomes the drawbacks of the traditional water injection pump, such as low service life and difficult maintenance and replacement, and achieves the purpose of improving the life of the water injection pump and facilitating replacement.

Description

New combined valve body type water injection pump

technical field

The utility model relates to high-pressure water injection equipment in an oil field, in particular to a novel combined valve body type water injection pump, which belongs to the technical field of high-pressure water injection pumps.

Background technique

At present, the structure of the pump head and valve body of the oilfield water injection pump is complicated, and installation and maintenance are difficult. The structure is complex, the cone valve body needs electric welding tools to replace, and the straight-through valve body fluid needs special tools to replace. In order to improve the working efficiency of the water injection pump and reduce the maintenance cost, the form of the valve body is improved, the length of the valve chamber is shortened, and the structure of the pump head is simplified, which can achieve the purpose of improving the life of the water injection pump and facilitating replacement.

Utility model content

The utility model aims to solve the above problems, and provides a new combined valve body type water injection pump, which overcomes the disadvantages of the traditional water injection pumps, such as low service life and difficult maintenance and replacement. The technical scheme adopted is as follows:

New combined valve body type water injection pump, including fixed seat, pump head body, combined valve body, inlet flow channel, pump head gland, discharge valve piece, screw, spring seat, liquid discharge flow channel, liquid inlet valve piece, reciprocating plunger. The pump head body is installed on the fixed seat, the pump head gland is connected to the output end of the pump head body, the combined valve body is installed in the pump head body with interference, the liquid inlet channel and the liquid discharge flow channel The channel is opened in the inner cavity of the combined valve body, the drain valve plate and the liquid inlet valve plate are respectively closely attached to the drain port and the liquid inlet port of the combined valve body, the screw threads are installed in the center of the combined valve body, and the spring seats are respectively Installed on the two ends of the screw and tightly press the liquid inlet valve plate and the liquid discharge valve plate, the reciprocating plunger is connected to the power end.

The utility model has the following advantages: stable structure, high efficiency, improved force on the pump head, convenient replacement of the valve body without special tools, effective and reliable.

Description of drawings

Figure 1: a schematic diagram of a half-section structure of the utility model;

Figure 2: a schematic diagram of the partial structure of the combined valve body of the present invention;

Symbol Description

1. Fixed seat, 2. Pump head body, 3. Combination valve body, 4. Inlet flow channel, 5. Pump head gland, 6. Discharge valve plate, 7. Screw, 8. Spring seat, 9. Exhaust Liquid flow path, 10. liquid inlet valve plate, 11 reciprocating plunger.

Detailed ways

Below in conjunction with accompanying drawing and example the utility model is described further:

As shown in Figure 1, the combined valve body type water injection pump of the present utility model includes a fixed seat 1, a pump head body 2, a combined valve body 3, a liquid inlet channel 4, a pump head gland 5, a liquid discharge valve plate 6, and a screw 7 , Spring seat 8, liquid discharge channel 9, liquid inlet valve plate 10, reciprocating plunger 11. The pump head body 2 is installed on the fixed seat 1, the pump head gland 5 is connected to the output end of the pump head body 2, the combined valve body 3 is installed in the pump head body 2 with interference, and the inlet The liquid flow channel 4 and the liquid discharge channel 9 are opened in the inner cavity of the combined valve body 3, and the liquid discharge valve plate 6 and the liquid inlet valve plate 10 are closely attached to the liquid discharge port and the liquid inlet port of the combined valve body 3 respectively. The screw 7 is threadedly installed in the center of the combined valve body 3, the spring seat 8 is respectively installed on both ends of the screw 7 and presses the liquid inlet valve piece 10 and the liquid discharge valve piece 6 tightly, and the reciprocating plunger 11 is connected to the power end.

When the water injection pump was working, the reciprocating plunger 11 reciprocated. The reciprocating plunger 11 moves backward, the volume of the compression chamber of the pump head body 2 increases, the pressure decreases, the liquid discharge valve 6 closes, the liquid inlet valve 10 opens, the liquid is sucked through the liquid inlet channel 4, and the liquid suction process is completed; The reciprocating plunger 11 moves forward, the volume of the compression chamber of the pump head body 2 decreases, the pressure increases, the liquid discharge valve 6 opens, the liquid inlet valve 10 closes, the liquid is discharged through the liquid discharge channel 9, and the liquid discharge process is completed. The reciprocating plunger 11 is constantly reciprocating, and the volume of the compression chamber of the pump head body 2 is constantly changing, so that the liquid is continuously transported from the low-pressure end to the high-pressure end, and the water injection work is completed. The spring seat 8 is respectively installed on both ends of the screw 7 to provide a pressing force on the valve plate. The liquid inlet flow channel 4 is opened in the center of the outer side of the combined valve body 3, which shortens the length of the valve cavity, simplifies the structure and size of the water injection pump, and realizes improved The purpose of the life of the pump head and the convenience of replacing the valve body.

The utility model has been described above with examples, but the utility model is not limited to the above-mentioned specific embodiments, and any changes or modifications made based on the utility model all belong to the protection scope of the utility model.

Claims (2)

1. novel compositions valve type water injection pump, it is characterized in that: comprise fixed base (1), pump head body (2), combinaing valve body (3), feed liquor runner (4), pump head gland (5), discharge opeing valve block (6), screw (7), spring seat (8), discharge opeing runner (9), feed liquor valve block (10), reciprocating plunger (11), described pump head body (2) is arranged on described fixed base (1), described pump head gland (5) is connected with pump head body (2) output terminal, described combinaing valve body (3) interference is arranged in pump head body (2), described feed liquor runner (4) and discharge opeing runner (9) are opened at combinaing valve body (3) inner chamber, described discharge opeing valve block (6) and feed liquor valve block (10) are close to combinaing valve body (3) liquid port and liquid entering hole respectively, described screw (7) screw thread is arranged on combinaing valve body (3) center, described spring seat (8) to be arranged on respectively on screw (7) two ends and to press feed liquor valve block (10) and discharge opeing valve block (6), described reciprocating plunger (11) connects power end.

2. novel compositions valve type water injection pump according to claim 1, is characterized in that: described feed liquor runner (4) opens the center in combinaing valve body (3) outside.