RU57861U1 - THROTTLE VALVE - Google Patents

Abstract

The utility model relates to gas and liquid fittings, in particular for regulating liquid and gaseous media. The throttle valve comprises a housing with inlet and outlet nozzles, a throttle pair made of carbide ceramic, and consisting of a conical shaped tip connected to a spindle located in the cover and a seat, located in the housing. The technical result is to increase the service life of the throttle valve by about 10 times.

Description

The invention relates to gas and liquid fittings, in particular for regulating liquid and gaseous media.

A throttle is known, in the case of which a throttling body is installed, the body and the throttling body made of materials with different linear expansion coefficients, the throttling body is made in the form of two truncated cones mated with bases, and an additional saddle is formed in the body, forming an additional pair with the throttling body ( AS USSR No. 712593, publ. 30.01.80 g.).

Known throttle control valve containing a housing with inlet and outlet nozzles separated by a partition, and with an opening located perpendicular to the axes of the nozzles, a cover mounted on the housing from the side of the hole, in which there is a seat installed in the partition with a conical surface for interaction with associated spindle locking element located in the cover connected to the housing by a screw connection with the possibility of pressing the saddle to the partition, and the saddle is made with a through hole for a throttle element made in the form of a cylindrical shank connected to the locking element with a fairing at the end (RF patent No. 2206014, publ. 06/10/2003).

Also known, adopted for the prototype, a throttle comprising a housing with inlet and outlet fittings and a saddle and a conical locking element mated to a throttling element, made in the form of a screw pair with a wedge groove on the screw (USSR AS No. 1800191, publ. 07.03.93 g .).

A common disadvantage of the known throttle devices is their lack of reliability and durability. The composition of the flow of the working fluid passing through the throttle contains mechanical and other impurities, due to which there is intense wear (corrosion) of the throttle pair

(tip and saddle), which in known chokes are made, as a rule, of metal. This leads to a violation of the technological regime of the wells, frequent revisions of control valves and the replacement of worn throttle pairs, which is associated with high material costs, in addition, the well needs to be shut down, which leads to gas production losses.

The task to which the utility model is directed is to increase the service life of the throttle valve by strengthening the throttle pair.

This technical result is achieved by the fact that in a throttle valve containing a housing with inlet and outlet nozzles, a throttle pair consisting of a conical tip and a saddle placed in the housing, according to a utility model, the throttle pair is made of carbide ceramic.

The essence of the utility model is illustrated in the drawing, which shows a General view of the throttle valve.

The throttle valve comprises a housing 1 with an inlet 2 and an outlet 3 nozzles, a throttle pair made of carbide ceramic, and consisting of a conical tip 4 connected to a spindle 5 located in the cover 6 and a seat 7, sealing cuffs 8, located in the housing 1 nuts 9 and 10.

The throttle valve operates as follows (for example, gas).

The gas flow with mechanical and other impurities from the well enters an adjustable throttle valve through the inlet pipe 2 to the throttle pair (seat 7, tip 4), then the gas stream flows through the outlet pipe 3 into the pipeline. Intensive wear of the surfaces of the throttle pair occurs at the throttle point of the gas.

According to reports, the replacement of a standard throttle pair of metal on operated valves is made every year (sometimes more often). The implementation of a throttle pair of carbide ceramic allows

to increase its service life several times, based on calculations, up to about 10 years.

Industrial tests (controlled operation) of butterfly valves with ceramic butterfly pairs installed on the fountain fittings of gas wells in the Medvezhye field were conducted. Including in the well, where before the test intense wear of 3 standard metal throttle pairs was recorded (on average, complete wear of the throttle pair occurred within 240 hours). At the end of the test (2148-2880 hours) of butterfly valves with ceramic butterfly valves, the following factors were identified:

- on the basis of the data presented in the production, maintenance and repair log, it was found that no violations of the technological regime of the wells, on which butterfly valves with ceramic butterfly valves were installed, were detected;

- visual inspection of ceramic throttle pairs did not reveal any damage (chips, abrasive and erosive damage).

Thus, the period of operation of ceramic throttle pairs significantly exceeds the service life of metal throttle pairs, which undergo rapid wear.

Information sources:

1. A.S. USSR No. 712593, publ. 01/30/80

2. RF patent No. 2206014, publ. 06/10/2003

3. A.S. USSR No. 1800191, publ. 03/07/93 - (prototype).

Claims (1)

A throttle valve comprising a housing with inlet and outlet nozzles, a throttle pair located in the housing, consisting of a conical tip and a seat, characterized in that the throttle pair is made of carbide ceramic.