CN2235617Y

CN2235617Y - Steam thermal insulation five valve group

Info

Publication number: CN2235617Y
Application number: CN 95244405
Authority: CN
Inventors: 黄德昌; 戴行钰
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-19
Filing date: 1995-07-19
Publication date: 1996-09-18
Anticipated expiration: 2005-07-19

Abstract

The utility model relates to a steam thermal insulation five valve group matching with a transmitter, characterized in that two thermal insulation interfaces are arranged in the middle of a valve body; the two interfaces respectively are provided with a thermal insulation pipe and are communicated with each other. Steam led into the thermal insulation pipes ensures the valve group to be used in coldness so that the fluid in the valve body can not be frozen result from coldness; meanwhile, a pressure hole for compensation pressure is arranged at the opposite other end of a balance valve, which is connectable with a pressure meter or a pressure transmitter.

Description

Steam insulation five valve groups

The utility model relates to the measurement instrument field, belongs to specifically and the supporting a kind of device of measuring pressure, pressure reduction and the flow of fluid of various transmitters.

The five valve groups of being used always at present, when surveying steam or gas flow, must carry out pressure compensation in addition calculates, then cause the complicated of parts, need connect three pipes simultaneously, wherein pressure of two flows, even more important, this five valves group easily freezes at weather cold season, makes troubles to use, installs very inconvenient in addition.

The purpose of this utility model provides a kind of heat insulation function that has, and uses fluid can not freeze in cold season, has the steam insulation five valve groups of pressure compensation conveying end simultaneously.

For finishing the technical scheme that above-mentioned purpose is taked: in the middle of the centre of five original valve group valve bodies is two pressure pipes of two sides and blow-off pipe insulating tube is set, the other end top relative with equalizing valve is provided with the pressure compensation pressure tappings simultaneously.

Two insulating tubes are set in the middle of the utility model valve body, passage interconnects in valve body, lead to steam in cold season and can obtain insulation effect valve body, fluid in the valve body can not freeze because of cold, simultaneously owing to the end at valve body is provided with the pressure compensation pressure tappings, on valve body, make things convenient for the connection pressure unit, can reduce by a pressure pipeline.

The utility model embodiment is described in detail in conjunction with the accompanying drawings.

Fig. 1 is the utility model structure front elevation;

Fig. 2 is the utility model structure side view cutaway drawing;

Fig. 3 is an insulating tube paths cut-open view.

According to illustrated in figures 1 and 2, one side of valve body 2 is provided with pressure measuring valve 3 and following pressure measuring valve 10, on, following pressure measuring valve 3 and 10 vertical direction are provided with pressure pipe 4 and following pressure pipe 9 respectively, the opposite side of valve body 2 is provided with scum valve 19 and down blow valve 13, and last, down blow valve 19 and 13 vertical direction are provided with blow-off pipe 18 and down blow pipe 14 respectively, the item end of valve body 2 is provided with equalizing valve 1, one side of valve body 2 (being the relative direction of insulating tube 12) is provided with two connecting pipes 8 that connect transmitters as shown in Figure 2, above-mentioned equalizing valve passage, the pressure measuring valve passage, blowoff valve passage and transmitter connecting pipe 8 are communicated with mutually, also can close mutually by valve, need for installing, on valve body 2, be provided with four transmitter hole 5 is installed, 7,15 can directly be connected with differential pressure transmitter with 17.Key of the present utility model is provided with

insulation interface

6 and 16 in the centre of valve body 2, this interface is provided with insulating tube 12 respectively, two interfaces are interconnected as shown in Figure 3 in valve body 2, interface channel one end among Fig. 3 is established round pin 20 close-fittings and sealing weld 21 respectively, reach sealing function, the relative other end at equalizing valve 1 is provided with pressure compensation pressure tappings 11 simultaneously, is used for the setting pressure table.

When the user carries out blowdown, but root valve in the shutdown system is opened equalizing valve and positive and negative pressure valve, two blowoff valves, can get rid of unclean medium in the pipeline, resets then.Open equalizing valve 1 in when work, close upper and lower pressure measuring valve 3 and, positive negative pressure measuring chamber pressure equilibrium at 9 o'clock.Close equalizing valve 1, open upper and lower pressure measuring valve 3 and at 9 o'clock, two output end pressures are respectively P1 and P2.Equalizing valve 1 is opened, and upper and lower pressure measuring valve one valve is opened, and a valve closes, and then two output end pressures are P1 and P2.

When installing and using at the scene,, only need when mounted can solve material inlet and sewage draining exit exchange no matter on-the-spot differential pressure transmitter is more high or low than pressure source.

Close positive and negative pressure inlet valve and equalizing valve at the scene, open two blowoff valves, just can carry out adjustment to differential pressure, pressure unit at the scene, needn't tear back transmitter open the instrument shop adjustment, therefore, easy to use.

Because this valve is straight punching, does not have tiltedly punching, is difficult for contamination in the valve, so drain during blowdown clean easily.

Claims

1, a kind of pressure of and the supporting measurement fluid of transmitter, the steam insulation five valve groups of pressure reduction and flow, by last, following pressure measuring valve, in the setting of pressure measuring valve vertical direction, following pressure pipe, on, down blow valve and blow-off pipe, equalizing valve and transmitter connecting pipe are formed, the centre that it is characterized in that valve body (2) is provided with two insulation interfaces (6) and (16), this two interface is provided with insulating tube (12) respectively, two interfaces in valve body (2) are interconnected, the relative other end of equalizing valve (1) is provided with pressure compensation pressure tappings (11) connection pressure unit simultaneously, and each valve passage all is straight punching.