JP2017182718A - Pressure adjust device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure adjust device which can individually control the openings of a pair of valve bodies with the openings correlated to each other, while it employs a relatively simple construction to improve disassembly maintainability.SOLUTION: A pressure adjust device includes a linkage R which adjusts both of an opening by a first valve body V1 and an opening by a second valve body V2 with them correlated to each other, according to a movement of a diaphragm D2 due to a change of a control pressure introduced into a pressure adjust chamber H4.SELECTED DRAWING: Figure 1

Description

  The present invention provides a pressure regulating device that adjusts the secondary pressure of a fluid flow path through which a fluid flows to a set pressure by introducing a control pressure into a pressure regulating chamber formed by dividing the interior of the governor with a diaphragm. Relates to the device.

Conventionally, as a pressure regulator, there is known a positive pressure regulator 200 of a type that introduces drive pressure from a pilot governor 50 for a positive action main governor to a positive action main governor 10 as shown in FIG. (See Patent Document 1).
When the description is added, as shown in FIG. 11, the positive action type pressure regulator 200 is driven to the main action governor 10 of the positive action type that adjusts the secondary pressure of the fluid flow path L0 to the set pressure, and the main governor 10. And a pilot governor 50 for introducing pressure.
The main governor 10 includes a first diaphragm D1 provided along the diaphragm plate 14, and an internal space thereof is partitioned into a first chamber H1 and a second chamber H2 by the first diaphragm D1. The main governor 10 includes a main valve body V0 that opens and closes a main opening K0 provided in the fluid flow path L0. The main valve body V0 is connected to the first diaphragm D1 by a connecting rod 16 and is first. It is configured to be opened and closed in a form that moves in conjunction with the diaphragm D1. The first chamber H1 is provided with a first biasing spring G1 that biases the first diaphragm D1 toward the valve opening direction of the main valve body V0.

  The pilot governor 50 includes a second diaphragm D2 provided along the diaphragm plate 34, and an internal space thereof is partitioned into a third chamber H3 and a fourth chamber H4 by the second diaphragm D2. The pilot governor 50 is connected to the first secondary pressure introduction path L2 connected to the secondary side of the fluid flow path L0 (downstream side of the main governor 10) and the second chamber H2 of the main governor 10. And a second valve body V2 for opening and closing a second opening K2 provided between the second pressure body V2 and the driving pressure introduction path L3. The second valve body V2 is connected to the second diaphragm D2 by a connecting rod 36 and is secondly connected. It is configured to open and close in a form that moves in conjunction with the two diaphragms D2. The third chamber H3 is provided with a second urging spring G2 that urges the second diaphragm D2 toward the valve opening direction of the second valve body V2.

  By adopting this configuration, when the secondary pressure of the fluid flow path L0 is lower than the set pressure, the pressure in the fourth chamber H4 of the pilot governor 50 communicating with the first secondary pressure introduction path L2 is reduced. The second diaphragm D2 is displaced toward the fourth chamber H4 by the biasing force of the second biasing spring G2. As a result, the second valve body V2 of the pilot governor 50 operates to the open side, and the fluid in the second chamber H2 of the main governor 10 is discharged to the secondary side of the fluid flow path L0 via the drive pressure introduction path L3. The Thereby, since the pressure difference between the first chamber H1 and the second chamber H2 becomes small, the first diaphragm D1 is displaced to the second chamber H2 side by the biasing force of the first biasing spring G1, and the main governor 10 The main valve body V0 is operated to the opening side, and the secondary side pressure of the fluid flow path L0 is increased to adjust the secondary side pressure to the set pressure.

  On the other hand, when the secondary side pressure rises higher than the set pressure, the pressure in the fourth chamber H4 of the pilot governor 50 rises, and the second diaphragm D2 moves against the urging force of the second urging spring G2 in the third chamber H3. Displace to the side. As a result, the second valve body V2 closes the second opening K2, the fluid is not discharged from the second chamber H2 of the main governor 10 to the secondary side of the fluid flow path L0, and the second of the main governor 10 is The primary side pressure is introduced into the chamber H2 via the primary side pressure introduction path L1, the throttle 39, and the first secondary side pressure introduction path L2, and the pressure in the second chamber H2 rises, and the first chamber H1 and the first chamber H1 The first diaphragm D1 is displaced toward the first chamber H1 due to the pressure difference with the two chambers H2. Therefore, the main valve body V0 of the main governor 10 is operated to the closed side, and the secondary side pressure of the fluid flow path L0 is reduced to adjust the secondary side pressure to the set pressure.

  The pilot governor 50 of the positive pressure regulator 200 has a configuration including a single second diaphragm D2 as a diaphragm, so that the configuration is relatively simple and the disassembly maintenance is high. When the side pressure rises above the set pressure, the speed at which the primary side pressure is introduced into the second chamber H2 is not dependent on the difference between the secondary side pressure and the set pressure (the pressure increase level of the secondary side pressure) There is a problem that the valve closing speed of the main valve body V0 of the main governor 10 cannot be made variable at all times.

  On the other hand, as shown in FIG. 12, a reverse pressure regulator that can change the valve closing speed of the main valve body V0 of the main governor 10 when the secondary pressure rises higher than the set pressure. 2. Description of the Related Art A reverse operation type pressure regulating device 300 that introduces a driving pressure from a pilot governor 50 for a reverse operation type main governor to an operation type main governor 10 is known (see Patent Document 2).

As shown in FIG. 12, the reverse operation type pressure regulator 300 introduces a reverse operation type main governor 10 that adjusts the secondary side pressure of the fluid flow path L <b> 0 to a set pressure, and driving pressure to the main governor 10. The pilot governor 50 is provided.
The main governor 10 includes a first diaphragm D1 provided along the diaphragm plate 14, and an internal space thereof is partitioned into a first chamber H1 and a second chamber H2 by the first diaphragm D1. The main governor 10 includes a main valve body V0 that opens and closes a main opening K0 provided in the fluid flow path L0. The main valve body V0 is connected to the first diaphragm D1 by a connecting rod 16 and is first. It is configured to be opened and closed in a form that moves in conjunction with the diaphragm D1. The first chamber H1 is provided with a first biasing spring G1 that biases the first diaphragm D1 toward the valve closing direction of the main valve body V0.

The pilot governor 50 includes a second diaphragm D2 and a third diaphragm D3, and the internal spaces of the second diaphragm D2 and the third diaphragm D3 are the third chamber H3, the fourth chamber H4, and the fifth chamber H5. It is divided into and. The third chamber H3 is connected to the secondary side (downstream side of the main governor 10) of the fluid flow path L0 through the first secondary pressure introduction path L2, and the second secondary pressure introduction path L2b. Accordingly, the main governor 10 is connected to the first chamber H1. The fourth chamber H4 is communicatively connected to the primary side (upstream side of the main governor 10) of the fluid flow path L0 by the primary side pressure introduction path L1, and the second chamber of the main governor 10 by the driving pressure introduction path L4. It is connected in communication with H2. The second diaphragm D2 and the third diaphragm D3 are connected by a connecting portion or the like, and are configured to be integrally displaceable up and down. A second urging spring G2 is disposed in the fifth chamber H5, and the second urging spring G2 urges the third diaphragm D3 toward the fourth chamber H4, thereby providing the second diaphragm. D2 is urged toward the third chamber H3 side.
A second valve body 36b is provided at the tip of the primary side pressure introduction path L1, and the second valve body 36b is moved from the second diaphragm D2 to the fourth chamber H4 by the third biasing spring G3. It is urged toward the tip of the introduction path L1. Further, the second valve body 36b is integrally provided with a third valve body 36a for opening and closing an opening 34a formed in the second diaphragm D2.
When the secondary pressure of the fluid flow path L0 is lower than the set pressure, the second diaphragm D2 is displaced toward the third chamber H3, and the second valve body 36b moves the tip of the primary pressure introduction path L1. The third valve body 36a closes the opening 34a of the second diaphragm D2 and opens the second diaphragm D2 to the fourth chamber H4 side when the secondary pressure of the fluid flow path L0 rises above the set pressure. The second urging spring G2 and the third urging spring G3 are displaced so that the second valve body 36b closes the distal end portion of the primary pressure introduction path L1 and the third valve body 36a opens the opening 34a. The biasing force is set.

  By adopting this configuration, when the secondary pressure of the fluid flow path L0 is lower than the set pressure, the pilot connected to the secondary side of the fluid flow path L0 through the first secondary pressure introduction path L2 The pressure in the third chamber H3 of the governor 50 decreases, and the second diaphragm D2 is displaced toward the third chamber H3 by the biasing force of the second biasing spring G2. As a result, the second valve body 36b of the pilot governor 50 operates on the opening side, and the primary side pressure of the fluid flow path L0 is introduced into the fourth chamber H4 through the primary side pressure introduction path L1, and the pressure in the fourth chamber H4 Rises. Then, the increased pressure in the fourth chamber H4 is introduced as a driving pressure into the second chamber H2 of the main governor 10 through the driving pressure introduction path L4, and the pressure in the second chamber H2 is also increased. The first diaphragm D1 is displaced toward the first chamber H1 due to the pressure difference with the second chamber H2. Therefore, the main valve body V0 of the main governor 10 is operated to the open side, and the secondary side pressure of the fluid flow path L0 is increased to adjust the secondary side pressure to the set pressure.

On the other hand, when the secondary side pressure rises higher than the set pressure, the pressure in the third chamber H3 of the pilot governor 50 increases, and the second diaphragm D2 resists the urging force of the second urging spring G2, and the second diaphragm D2 moves into the fourth chamber H4. Displace to the side. Thereby, the 2nd valve body 36b is operated to the close side, and the primary side pressure to the 4th chamber H4 is no longer introduced. As a result, the fluid in the second chamber H2 passes through the throttle 39, the second secondary side pressure introduction path L2b, the third chamber H3, and the first secondary side pressure introduction path L2 to the secondary side of the fluid flow path L0. The pressure in the second chamber H2 is reduced, and the first diaphragm D1 is displaced toward the second chamber H2 due to the pressure difference between the first chamber H1 and the second chamber H2. Therefore, the main valve body V0 of the main governor 10 is operated to the closed side, and the secondary side pressure of the fluid flow path L0 is reduced to adjust the secondary side pressure to the set pressure.
When the secondary pressure rises above the set pressure, the pressure in the third chamber H3 of the pilot governor 50 rises, and the second diaphragm D2 moves against the urging force of the second urging spring G2 in the fourth chamber H4. When displaced to the side, the third valve body 36a is configured to open the opening 34a of the second diaphragm D2, and the opening of the opening 34a increases as the pressure difference between the secondary pressure and the set pressure increases. It is comprised so that it may become.
That is, in the reverse operation type pressure regulating apparatus 300 shown in FIG. 12, the speed in the closing direction of the main valve body V0 of the main governor 10 is configured to increase as the secondary side pressure decreases.

JP, 2015-103014, A JP, 2015-103013, A

As described above, in the conventional techniques, when the secondary side pressure is lower than the set pressure, the speed in the opening direction of the main valve body V0 of the main governor 10 is variable according to the step-down speed of the secondary side pressure. In order to make the speed in the closing direction of the main valve body V0 of the main governor 10 variable according to the pressure increase speed of the secondary pressure when the secondary pressure rises above the set pressure. As shown in the pilot governor 50 of the reverse operation type pressure regulator 300 as shown in FIG. 12, the opening degree of the second valve body 36b and the third valve body 36a is adjusted individually in a mutually related state. There is a need.
For this purpose, it is necessary to adopt a relatively complicated configuration including two diaphragms, ie, the second diaphragm D2 and the third diaphragm D3, like the pilot governor 50 of the reverse operation type pressure regulating device 300. There was room for improvement from the viewpoint of sex.

  The present invention has been made in view of the above-described problems, and the object thereof is to adopt a relatively simple configuration while being able to individually control the opening degree of a pair of valve bodies in a mutually related state. Accordingly, it is an object of the present invention to provide a pressure regulator that can improve the disassembly and maintenance.

A pressure regulator for achieving the above object is as follows:
A pressure regulator that adjusts the secondary pressure of a fluid flow path through which a fluid flows to a set pressure by introducing a control pressure into a pressure regulation chamber formed by dividing the interior of the governor with a diaphragm. The feature configuration is
A first opening communicating the two connection flow path portions selected from three different connection flow path portions through which the fluid flows;
A second opening communicating two connection flow path portions selected from three connection flow path portions in a state where one is different from the two connection flow passage portions communicating with the first opening;
A first valve body that opens and closes one of the first opening and the second opening;
A second valve body that opens and closes one of the first opening and the second opening;
Both the opening degree by the first valve body and the opening degree by the second valve body are separately related to each other in accordance with the movement of the diaphragm due to the fluctuation of the control pressure introduced into the pressure regulating chamber. And a link mechanism for adjustment.

According to the above characteristic configuration, both the first valve body that opens and closes either the first opening or the second opening and the second valve body that opens or closes the other of the first opening or the second opening. Provided with a link mechanism for separately controlling the opening degree of each of the first diaphragm in a mutually related state with the movement of the first diaphragm due to the fluctuation of the control pressure introduced into the pressure regulating chamber. With only a relatively simple configuration, the degree of opening of the first valve body and the second valve body can be adjusted satisfactorily in a mutually related state with a configuration including a single diaphragm.
As described above, according to the above-described characteristic configuration, in a governor having a single diaphragm, two different valve bodies are related to each other with the movement of the diaphragm by a relatively simple configuration including a link mechanism. It is possible to realize a pressure regulator that can be individually adjusted according to the state.

Further features of the pressure regulator
The link mechanism opens one of the first opening and the second opening by the first valve body as the diaphragm moves from the reference position to the pressure regulating chamber side, and A first open / close state in which one of the first opening and the second opening is closed by the second valve body, and the movement from the reference position of the diaphragm to the side opposite to the pressure regulating chamber. Either the first opening or the second opening is closed by the first valve body, and the other one of the first opening and the second opening is opened by the second valve body. The point is to switch to the second open / close state.

  If the link mechanism is configured as in the above characteristic configuration, the first valve body is opened and the second valve body is closed, and the first open / close state is closed, and the first valve body is closed and the second valve body is opened. The two open / closed states can be switched in accordance with the movement of the diaphragm from the reference position to one side or the other side due to fluctuations in the control pressure introduced into the pressure regulating chamber.

Further features of the pressure regulator
In the first open / closed state, the link mechanism is configured such that the greater the amount of movement of the diaphragm from the reference position to the pressure regulating chamber side, the more the first opening or the second opening is caused by the first valve body. The opening degree of the diaphragm is adjusted to be increased, and in the second open / close state, the second valve element causes the second valve body to move as the amount of movement of the diaphragm from the reference position to the side opposite to the pressure regulating chamber increases. It is in the point which adjusts so that the opening degree of either one opening part or the said 2nd opening part may be enlarged.

  According to the above characteristic configuration, in the first open / close state, the link mechanism adjusts to increase the opening degree of the first valve body as the amount of movement from the reference position of the diaphragm to the pressure regulating chamber side increases. In the second open / closed state, the opening amount by the second valve body is adjusted to increase as the amount of movement from the reference position of the diaphragm to the side opposite to the pressure regulating chamber increases, so that the first valve body and the second valve body The degree of opening can be changed according to the control pressure introduced into the pressure regulating chamber. As a result, the first valve body and the second valve body can be connected to, for example, a supply valve (a valve body corresponding to the second valve body 36b of FIG. 12 in the description of the related art described above) or an exhaust for a reverse operation type governor. It can work well as a valve (a valve body corresponding to the third valve body 36a in FIG. 12 in the above description of the prior art).

As a pressure regulator,
As the connection flow path part, a first connection flow path part, a second connection flow path part, and a third connection flow path part are separately provided, and the first connection flow path part and the second connection flow path part are provided. The link mechanism and the first valve body include a flow path part body having the first opening that communicates, and a second opening that communicates the second connection flow path part and the third connection flow path part. And a governor body including the second valve body,
The flow path portion main body has a first operating posture in which the first opening is opened and closed by the first valve body and the second opening is opened and closed by the second valve body, and the first opening is It is preferable to have a flow path switching connection portion that is mounted on the governor body by switching between a second operating posture that is opened and closed by the second valve body and the second opening portion is opened and closed by the first valve body.

  By adopting this configuration and switching between the first operation posture and the second operation posture at the flow path switching connection portion, the pressure regulator is used as a pilot for a positive operation type governor as described below. It can function as both a governor and a pilot governor for a reverse operation type governor.

Further features of the pressure regulator
The control pressure introduced into the pressure regulating chamber is a secondary pressure that is a pressure on the secondary side of the fluid flow path,
Each of the connection flow path parts has a first connection flow path part, a second connection flow path part, and a third connection flow path part,
In the first operation mode in which the first opening is opened and closed by the first valve body and the second opening is opened and closed by the second valve body, the fluid flow path is disposed in the first connection flow path portion. A secondary pressure introduction path that communicates with the secondary side is connected, and a drive pressure introduction path that introduces a drive pressure to a main pressure regulating chamber of a main governor different from the governor is connected to the second connection flow path portion. A primary pressure introduction path that is connected and communicates with the primary side of the fluid flow path is connected to the third connection flow path portion.

  By adopting this configuration, it can function well as a pilot governor for the positive action type governor described in the prior art.

Further features of the pressure regulator
The control pressure introduced into the pressure regulating chamber is a secondary pressure that is a pressure on the secondary side of the fluid flow path,
Each of the connection flow path parts has a first connection flow path part, a second connection flow path part, and a third connection flow path part,
In the second operating posture in which the first opening is opened and closed by the second valve body and the second opening is opened and closed by the first valve body, the fluid flow path is disposed in the first connection flow path portion. A secondary pressure introduction path that communicates with the secondary side is connected, and a drive pressure introduction path that introduces a drive pressure to a main pressure regulating chamber of a main governor different from the governor is connected to the second connection flow path portion. A primary pressure introduction path that is connected and communicates with the primary side of the fluid flow path is connected to the third connection flow path portion.

  By adopting this configuration, it can function well as a pilot governor for the reverse operation type governor described in the prior art.

Further features of the pressure regulator
As the connection flow path part, a first connection flow path part, a second connection flow path part, and a third connection flow path part are separately provided, and the first opening portion includes the first connection flow path part and the second connection flow path part. The connection flow path part is communicated, and the second opening communicates the first connection flow path part and the third connection flow path part,
The first valve body opens and closes the first opening, and the second valve body opens and closes the second opening.
A secondary pressure introduction path communicating with the secondary side of the fluid flow path is connected to the first connection flow path portion, and a main pressure regulating chamber of a main governor different from the governor is connected to the second connection flow path portion. Is connected to a drive pressure introduction path for introducing a drive pressure, and the third connection flow path portion is open to the atmosphere.

According to the above characteristic configuration, for example, when the secondary pressure as the control pressure is introduced into the pressure regulating chamber, the secondary pressure as the control pressure is a pressure within the normal control range. The pressure regulator can be operated as a pilot governor that can appropriately introduce the drive pressure into the main pressure regulating chamber of the governor (positive operation type).
On the other hand, when the secondary side pressure is abnormally higher than the set pressure, the second valve body is opened while the first valve body is closed, so that the secondary side pressure of the first connection flow path portion is third connected. It is possible to escape to the atmosphere via the flow path part. As a result, the second valve body can function as a large-capacity relief valve for the secondary side pressure, and a pilot governor that can reliably prevent the secondary pressure from being excessively boosted can be realized.

Further features of the pressure regulator
As the connection flow path part, a first connection flow path part, a second connection flow path part, and a third connection flow path part are separately provided, and the first opening portion includes the first connection flow path part and the second connection flow path part. The connection flow path part is communicated, and the second opening communicates the first connection flow path part and the third connection flow path part,
The first valve body opens and closes the first opening, and the second valve body opens and closes the second opening.
A secondary side pressure introduction path communicating with the secondary side of the fluid flow path is connected to the first connection flow path portion, and a primary side pressure communicating with the primary side of the fluid flow path to the second connection flow path portion The introduction path is connected, and the third connection flow path portion is open to the atmosphere.

According to the above characteristic configuration, for example, when the secondary side pressure as the control pressure is introduced into the pressure regulating chamber, the secondary side pressure as the control pressure is a pressure within the normal control range. With the form in which the opening degree of the first valve body is controlled in accordance with the appropriate displacement, it is possible to act as a direct acting type governor that controls the secondary side pressure to become the set pressure.
On the other hand, when the secondary side pressure is abnormally higher than the set pressure, the second valve body is opened while the first valve body is closed, so that the secondary side pressure of the first connection flow path portion is third connected. It is possible to escape to the atmosphere via the flow path part. As a result, the second valve body can function as a large-capacity relief valve for the secondary pressure, and a direct acting governor that can reliably prevent the secondary pressure from being excessively increased can be realized.

As a pressure regulator, the link mechanism is
One of the first opening and the second opening is closed by the first valve body, and the other of the first opening and the second opening is closed by the second valve body. A second shaft portion that swings in a direction that forms a predetermined angle with respect to a first axial direction that is an axial direction of the first shaft portion that extends along the moving direction of the diaphragm in a reference state. ,
The second shaft portion is supported slidably with respect to the support portion in a state where one end portion thereof is supported by the support portion of the first shaft portion, and the other end portion of the second shaft portion of the governor. It is connected via a biasing means to a connection part formed in the main body,
A first pivoting portion pivotally supporting the valve shaft of the first valve body on one side of a region divided by a straight line connecting the one end portion and the other end portion on the swing surface of the second shaft portion; It is preferable that a second pivotal support part pivotally supports the valve shaft of the second valve body on the other side of the region divided by the straight line on the swing surface.

Further features of the pressure regulator
Of the first valve body or the second valve body, the valve body that opens and closes the first opening portion is opened and closed by the link mechanism, and the first seating portion of the first seat portion on which the valve body seats is seated at the first opening portion. A first seating portion operating member whose position is freely movable;
The first seating part operation member is configured to be operated from the outside of the connection flow path part, and is configured to be movable in the opening / closing movement direction of the first seating part.

Further features of the pressure regulator
Of the first valve body or the second valve body, the valve body that opens and closes the second opening portion is opened and closed by the link mechanism, and the second seating portion of the second seat portion on which the valve body seats is seated. A second seating portion operating member that is movable in position;
The second seating part operation member is configured to be operated from the outside of the connection flow path part and configured to be able to move the second seating part in the opening / closing movement direction.

  By configuring the first seating part operation member and the second seating part operation member as in the above characteristic configuration, both the first seating part and the second valve body are operated by operating both from the outside. Can be moved appropriately in the opening / closing movement direction of the valve body. For example, the link ratio of the link mechanism and the reference position of the diaphragm can be operated from the outside without disassembling the pressure regulator. Can be adjusted more favorably.

Enlarged view of the pilot governor when the pressure regulator according to the first embodiment is operated as a positive operation type Enlarged view of the pilot governor when the pressure regulator according to the first embodiment is operated as a reverse operation type Schematic configuration diagram of the pressure regulator when the secondary pressure drops below the set pressure when working as a positive operating type Schematic configuration diagram of the pressure regulator when the secondary pressure rises higher than the set pressure when working as a positive operation type Schematic configuration diagram of the pressure regulator when the secondary pressure drops below the set pressure when working as a reverse action type Schematic configuration diagram of the pressure regulator when the secondary pressure rises above the set pressure when working as a reverse action type The enlarged view of the pilot governor of the pressure regulator which concerns on 2nd Embodiment The principal part enlarged view of the pressure regulating apparatus which concerns on another embodiment The principal part enlarged view of the pressure regulating apparatus which concerns on another embodiment The principal part enlarged view of the pressure regulating apparatus which concerns on another embodiment Schematic configuration diagram showing a conventional pressure regulator of the normal operation type Schematic configuration diagram showing a conventional reverse pressure regulator

[First Embodiment]
As shown in FIGS. 1 to 6, the pressure regulating equipment 100 according to the first embodiment has a relatively simple configuration, and the secondary pressure P <b> 2 is higher than the set pressure while improving disassembly maintenance. The pilot governor 50 (an example of a pressure regulator) that can vary the speed in the closing direction of the main valve body V0 of the main governor 10 and introduces drive pressure to the main actuating main governor 10 and the reverse actuating main governor. 10 can function as both a pilot governor 50 (an example of a pressure regulator) that introduces a driving pressure into the motor 10.
In the specification, the pressure on the upstream side of the main governor 10 in the fluid flow path L0 is defined as the primary pressure P1, and the pressure on the downstream side of the main governor 10 is defined as the secondary pressure P2.

As shown in FIGS. 3 to 6, the pressure regulating apparatus 100 includes a main governor 10 that adjusts the secondary pressure P2 of the fluid flow path L0 through which a fluid such as city gas 13A flows to a set pressure, and the main governor. The pilot governor 50 is configured to introduce the driving pressure Pα into ten main pressure regulating chambers (second chamber H2 described later).
Here, although illustration is omitted, a plurality of demands are obtained by branching the downstream side of the main governor 10 of the fluid flow path L0 into a plurality of branch paths and connecting each of the plurality of branch paths to each consumer. It is configured to supply a fluid such as city gas 13A to the house.

In the pressure regulating equipment 100 according to this embodiment, the pilot governor 50 is provided with the flow path part main body 40 as shown in FIGS. The pilot governor is configured to function as both the pilot governor that performs the operation and the pilot governor that introduces the driving pressure into the reverse operation type main governor 10. Therefore, before describing the overall configuration, the configuration of the pilot governor 50 will be described.
In the pilot governor 50, the secondary side pressure (an example of the control pressure) is introduced into a fourth chamber H4 (an example of the pressure regulating chamber) formed by dividing the inside of the governor body 30 by the second diaphragm D2. Thus, the drive pressure is introduced into the main governor 10.
As shown in FIGS. 1 and 2, the pilot governor 50 has a first opening that communicates two connection flow path portions S1, S2 selected from three different connection flow path portions S1, S2, S3 through which a fluid flows. The two connection flow path portions S2 and S3 selected from the three connection flow path portions are communicated with each other in a state where one is different from the two connection flow path portions S1 and S2 in which the part K1 and the first opening K1 communicate with each other. The second opening K2, the first valve body V1 that opens and closes one of the first opening K1 and the second opening K2, and the other one of the first opening K1 and the second opening K2. The second valve body V2 that opens and closes, and the opening degree by the first valve body V1 and the opening degree by the second valve body V2 are both introduced into the fourth chamber H4 (an example of a pressure regulating chamber). In a state in which the second diaphragm D2 moves due to a change in pressure P2 (an example of control pressure) And a link mechanism R to adjust separately.

If the explanation is added, the pilot governor 50 includes a governor body 30 and a flow path part body 40 so that the mounting state of the flow path part body 40 with respect to the governor body 30 can be switched.
The governor body 30 includes a second diaphragm D2 provided along the diaphragm plate 34, and an internal space thereof is partitioned into a third chamber H3 and a fourth chamber H4 by the second diaphragm D2. The third chamber H3 is provided with a second urging spring G2 that urges the second diaphragm D2 toward the fourth chamber H4. The above-described link mechanism R is provided in the fourth chamber H4. The link mechanism R is connected to the first valve body V1 via the first valve shaft V1a and to the second valve body V2 via the second valve shaft V2a.

The flow path part body 40 has a first connection flow path part S1, a second connection flow path part S2, and a third connection flow path part S3 as connection flow path parts, respectively. A flow path part main body having a first opening K1 communicating with the second connection flow path part S2 and a second opening K2 communicating with the second connection flow path part S2 and the third connection flow path part S3. 42.
Further, the flow path part main body 40 has a first operating posture in which the first opening K1 is opened and closed by the first valve body V1 and the second opening K2 is opened and closed by the second valve body V2 (shown in FIG. 1). Operating posture), and a second operating posture (the operating posture shown in FIG. 2) in which the first opening K1 is opened and closed by the second valve body V2 and the second opening K2 is opened and closed by the first valve body V1. And a flow path switching connection portion 41 for mounting the flow path portion main body portion 42 to the governor main body 30.

Here, a further description will be added to the configuration relating to the mounting of the flow path part body 40 to the governor body 30.
As shown in FIGS. 1 and 2, the governor main body 30 has a main body side connection portion 30 c having an outer peripheral portion having a regular circular shape for connection to the flow path portion main body 40. The main body side connection portion 30c is provided with two first communication holes 30a and a second communication hole 30b that communicate the inside (fourth chamber H4) of the governor body 30 with the outside. The first valve shaft V1a is slidably disposed in the communication hole 30a in an airtight manner, and the second valve shaft V2b is slidably disposed in the second communication hole 30b. The flow path switching connection portion 41 described above is an annular member that is rotatably disposed along the outer peripheral portion of the main body side connection portion 30c. In FIGS. A female screw is formed on the inner peripheral surface of the side.
On the other hand, the flow path part main body part 42 is provided with a flow path side connection part 42a having an outer peripheral part having an outer shape substantially the same diameter as the main body side connection part 30c. A male screw that is screwed into the female screw is formed.
In the state where the first valve body V1 faces the first opening K1 and the second valve body V2 faces the second opening K2, as in the first operation position (the operation position shown in FIG. 1), By rotating the path switching connection part 41 along the outer peripheral part of the main body side connection part 30c, the male screw of the flow path part body part 42 is screwed into the female screw of the flow path switching connection part 41, and FIG. The first operating posture shown is realized. Further, in the state where the first valve body V1 faces the second opening K2 and the second valve body V2 faces the first opening K1, as in the second operation position (the operation position shown in FIG. 2), By rotating the path switching connection part 41 along the outer peripheral part of the main body side connection part 30c, the male screw of the flow path part main body part 42 is screwed into the female screw of the flow path switching connection part 41, and FIG. The second operating posture shown is realized.
Incidentally, in both the first operation posture and the second operation posture, the main body side connection portion 30c and the flow path side connection portion 42a are hermetically connected by a seal member.

  As described above, in this embodiment, the flow path portion body 40 is configured to be switchable and connectable between the first operating posture and the second operating posture with respect to the governor body 30.

Next, the link mechanism R will be described.
The link mechanism R is configured such that the first valve body V1 closes one of the first opening K1 and the second opening K2, and the other of the first opening K1 and the second opening K2 is the second. In the reference state (the state indicated by the solid line in FIG. 1 or the state indicated by the solid line in FIG. 2) in which the valve body V2 is closed, the second diaphragm D2 moves in the moving direction (the direction along the arrow Z in FIGS. 1 and 2). A predetermined angle with respect to the first axial direction (the direction along the arrow Z in FIGS. 1 and 2), which is the axial direction of the first axial portion R1 extending along (approximately 90 ° in the present embodiment). A second shaft portion R2 that swingably extends in the direction of
The second shaft portion R2 is slidably supported with respect to the support portion R1a in a state where the one end portion R2a is supported by the support portion R1a of the first shaft portion R1, and the reference of the other end portion R2b. The pivot support part P0x is connected to a connection part R3 formed in the main body side connection part 30c of the governor body 30 via an urging spring F (an example of urging means), and the second shaft portion R2 The first valve shaft V1a of the first valve body V1 is pivotally supported on one side of a region divided by a straight line connecting the one end portion R2a and the other end portion R2b on the swing surface (the surface along the paper surface shown in FIGS. 1 and 2). And a second pivotal support part p2x that pivotally supports the second valve shaft V2a of the second valve body V2 on the other side of the region.
Incidentally, in the said 1st Embodiment, as shown in FIG. 1, the 1st pivotal support part P1x is a 1st valve stem in the long hole extended in the direction in alignment with the axial center direction of 2nd axial part R2. The protrusion provided in V1a is provided in a form that is slidably fitted.
The reference pivot part P0x is a straight line connecting the first pivot part P1x and the second pivot part P2x, and is provided at an equidistant position from both.

By adopting the above configuration, in the first operating posture shown in FIG. 1, the link mechanism R has the secondary pressure P2 introduced into the fourth chamber H4 (an example of the pressure regulating chamber) higher than the set pressure. When lowered, the first opening K1 is opened by the first valve body V1 and the second opening K2 is opened to the second valve as the second diaphragm D2 moves from the reference position toward the fourth chamber H4. When the first open / close state (the state indicated by the two-dot chain line in FIG. 1) closed by the body V2 and the secondary pressure P2 introduced into the fourth chamber H4 rises above the set pressure, the second diaphragm D2 A second opening / closing state in which the first opening K1 is closed by the first valve body V1 and the second opening K2 is opened by the second valve body V2 with the movement from the reference position toward the third chamber H3 ( (Not shown).
On the other hand, when the secondary pressure P2 introduced into the fourth chamber H4 (an example of a pressure regulating chamber) is lower than the set pressure in the second operating posture shown in FIG. As the diaphragm D2 moves from the reference position toward the fourth chamber H4, the first opening K2 is opened by the first valve body V1 and the first opening K1 is closed by the second valve body V2. When the second diaphragm D2 moves from the reference position of the second diaphragm D2 toward the third chamber H3 when the open / closed state (not shown) and the secondary pressure P2 introduced into the fourth chamber H4 rises above the set pressure. Then, the second opening K2 is closed by the first valve body V1, and the first opening K1 is switched to the second open / close state (not shown) opened by the second valve body V2.

  Furthermore, the link mechanism R adopts the above configuration, so that in the first open / close state, the first valve body V1 increases the first movement amount from the reference position of the second diaphragm D2 toward the fourth chamber H4. The opening degree of either the opening K1 or the second opening K2 is adjusted to be increased, and in the second open / close state, the reference position of the second diaphragm D2 to the third chamber H3 side (opposite to the pressure regulating chamber) The opening degree of the other of the first opening K1 and the second opening K2 by the second valve body V2 is adjusted to be larger as the movement amount to the side) increases.

  Further, the diaphragm plate 34 and the second diaphragm D2 of the pilot governor 50 communicate with the fourth chamber H4 and the third chamber H3 when the pressure in the fourth chamber H4 is excessively increased, and the pressure in the fourth chamber H4 is increased. A first relief valve (not shown) for lowering is provided. The pilot governor 50 is provided with a diaphragm V3 for preventing the second diaphragm D2 from moving up and down violently.

<Pressure regulating equipment 100 equipped with a positive operation type main governor>
Next, the operation when the pilot governor 50 is in the first operating posture (the posture shown in FIG. 1) will be described based on FIGS.
The pilot governor 50 in the first operation posture is configured to be able to introduce the drive pressure Pα into the positive operation type main governor 10.
The main actuating main governor 10 is the same as that described in the prior art, and includes a first diaphragm D1 provided along the diaphragm plate 14, and the inner space of the main governor 10 is the first diaphragm D1. It is divided into a chamber H1 and a second chamber H2 (an example of a main pressure regulating chamber). A main valve body V0 that opens and closes a main opening K0 provided in the fluid flow path L0 is provided. The main valve body V0 is connected to the first diaphragm D1 by a connecting rod 16 and interlocked with the first diaphragm D1. It is configured to open and close in a moving form. The first chamber H1 is provided with a first biasing spring G1 that biases the first diaphragm D1 toward the valve opening direction of the main valve body V0.
A first secondary pressure introduction path L2a communicating with the secondary side of the fluid flow path L0 is connected to the first connection flow path section S1 of the pilot governor 50, and the second connection flow path section S2 of the pilot governor 50 is connected to the first connection flow path section S1 of the pilot governor 50. A driving pressure introduction path L3 for introducing the driving pressure Pα is connected to the second chamber H2 of the main governor 10, and the primary side pressure communicating with the third connection flow path portion S3 of the pilot governor 50 to the primary side of the fluid flow path L0. An introduction path L1 is connected, and a second secondary pressure introduction path L2b connected to the secondary side of the fluid flow path L0 is connected to the fourth chamber H4.
The drive pressure introduction path L3 is connected in communication with the primary side pressure introduction path L1 through the throttle 39.

By adopting the above configuration, when the secondary pressure P2 of the fluid flow path L0 is lower than the set pressure, the second secondary pressure is introduced into the fourth chamber H4 of the pilot governor 50 as shown in FIG. The secondary side pressure P2 is introduced through the path L2b, and the second diaphragm D2 has a fourth difference due to the difference between the urging force of the second urging spring G2 and the force of the secondary side pressure P2 introduced into the fourth chamber H4. Moving to the chamber H4 side, the first valve body V1 opens the first opening K1, and the second valve body V2 closes the second opening K2. As a result, the gas in the second chamber H2 of the main governor 10 flows through the second connection flow path part S2, the first connection flow path part S1, the first secondary pressure introduction path L2a in the order described, and the fluid It is discharged to the secondary side of the flow path L0. Thereby, the first diaphragm D1 of the main governor 10 moves to the second chamber H2 side due to the difference between the urging force by the first urging spring G1 and the force due to the pressure of the second chamber H2, and the main valve body V0 is moved. Moving in a direction away from the main opening K0, the secondary side pressure P2 on the secondary side of the fluid flow path L0 is increased so as to approach the set pressure. At this time, the opening degree of the first opening K1 by the first valve body V1 increases as the secondary side pressure P2 decreases due to the action of the link mechanism R, and accordingly, the second chamber H2 of the main governor 10 Since the step-down speed increases, the lower the secondary pressure P2, the higher the valve opening speed of the main valve body V0, and the recovery speed (pressure increase speed) of the secondary pressure P2 increases.
On the other hand, when the secondary pressure P2 of the fluid flow path L0 rises above the set pressure, as shown in FIG. 4, the secondary side pressure P2 enters the fourth chamber H4 of the pilot governor 50 via the second secondary pressure introduction path L2b. When the pressure P2 is introduced, the second diaphragm D2 moves toward the third chamber H3 due to the difference between the urging force of the second urging spring G2 and the force of the secondary side pressure P2 introduced into the fourth chamber H4. The first valve body V1 closes the first opening K1, and the second valve body V2 opens the second opening K2. Thereby, the fluid on the primary side of the fluid flow path L0 flows through the primary side pressure introduction path L1, the third connection flow path part S3, the second connection flow path part S2, and the drive pressure introduction path L3 in the order described, It flows into the second chamber H2 of the main governor 10. Thus, the first diaphragm D1 of the main governor 10 moves to the first chamber H1 side due to the difference between the urging force by the first urging spring G1 and the force due to the pressure of the second chamber H2, and the main valve body V0 is moved. Moving in the direction approaching the main opening K0, the pressure is lowered so that the secondary pressure P2 of the fluid flow path L0 approaches the set pressure. At this time, the opening degree of the second opening K2 by the second valve body V2 increases as the secondary pressure P2 increases due to the action of the link mechanism R, and accordingly, the second chamber H2 of the main governor 10 Since the pressure increase speed increases, the higher the secondary pressure P2, the higher the valve closing speed of the main valve body V0, and the higher the recovery speed (step-down speed) of the secondary pressure P2.

<Pressure regulating equipment 100 equipped with a reverse operation type main governor>
Next, the operation when the pilot governor 50 is in the second operating posture (the posture shown in FIG. 2) will be described based on FIGS.
The pilot governor 50 in the second operation posture is configured to be able to introduce the drive pressure Pα into the reverse operation type main governor 10.
The reverse-acting main governor 10 is the same as that described in the prior art, and includes a first diaphragm D1 provided along the diaphragm plate 14, and the internal space of the main governor 10 is the first diaphragm D1. It is divided into a chamber H1 and a second chamber H2 (an example of a main pressure regulating chamber). A main valve body V0 that opens and closes a main opening K0 provided in the fluid flow path L0 is provided. The main valve body V0 is connected to the first diaphragm D1 by a connecting rod 16 and interlocked with the first diaphragm D1. It is configured to open and close in a moving form. The first chamber H1 is provided with a first biasing spring G1 that biases the first diaphragm D1 toward the valve closing direction of the main valve body V0.
A primary pressure introduction path L1 communicating with the primary side of the fluid flow path L0 is connected to the third connection flow path section S3 of the pilot governor 50, and the second connection flow path section S2 of the pilot governor 50 is connected to the main governor 10. A driving pressure introduction path L3 that introduces the driving pressure Pα is connected to the second chamber H2, and the first secondary pressure that communicates with the first connection flow path portion S1 of the pilot governor 50 to the secondary side of the fluid flow path L0. An introduction path L2a is connected, and a second secondary pressure introduction path L2b connected to the secondary side of the fluid flow path L0 is connected to the fourth chamber H4.

By adopting the above configuration, when the secondary pressure P2 of the fluid flow path L0 is lower than the set pressure, the second secondary pressure is introduced into the fourth chamber H4 of the pilot governor 50 as shown in FIG. The secondary side pressure P2 is introduced through the path L2b, and the second diaphragm D2 has a fourth difference due to the difference between the urging force of the second urging spring G2 and the force of the secondary side pressure P2 introduced into the fourth chamber H4. Moving to the chamber H4 side, the first valve body V1 opens the second opening K2, and the second valve body V2 closes the first opening K1. Thereby, the fluid on the primary side of the fluid flow path L0 flows through the primary side pressure introduction path L1, the third connection flow path part S3, the second connection flow path part S2, and the drive pressure introduction path L3 in the order described, It flows into the second chamber H2 of the main governor 10. Thus, the first diaphragm D1 of the main governor 10 moves to the first chamber H1 side due to the difference between the urging force by the first urging spring G1 and the force due to the pressure of the second chamber H2, and the main valve body V0 is moved. Moving in a direction away from the main opening K0, the secondary side pressure P2 on the secondary side of the fluid flow path L0 is increased so as to approach the set pressure. At this time, the opening degree of the second opening K2 by the first valve body V1 increases as the secondary side pressure P2 decreases due to the action of the link mechanism R, and accordingly, the second chamber H2 of the main governor 10 Since the pressure increase speed increases, the lower the secondary pressure P2, the higher the valve opening speed of the main valve body V0, and the recovery speed (pressure increase speed) of the secondary pressure P2 increases.
On the other hand, when the secondary pressure P2 of the fluid flow path L0 rises higher than the set pressure, as shown in FIG. 6, the secondary side pressure is supplied to the fourth chamber H4 of the pilot governor 50 via the second secondary pressure introduction path L2b. When the pressure P2 is introduced, the second diaphragm D2 moves toward the third chamber H3 due to the difference between the urging force of the second urging spring G2 and the force of the secondary side pressure P2 introduced into the fourth chamber H4. The first valve body V1 closes the second opening K2, and the second valve body V2 opens the first opening K1. As a result, the gas in the second chamber H2 flows through the driving pressure introduction path L3, the second connection flow path part S2, the first connection flow path part S1, and the first secondary pressure introduction path L2a in the order described. And discharged to the secondary side of the fluid flow path L0. As a result, the first diaphragm D1 of the main governor 10 moves to the second chamber H2 side due to the difference between the urging force of the first urging spring G1 and the force due to the pressure of the second chamber H2, and the main valve body V0 is moved to the main valve body V0. Moving in the direction approaching the opening K0, the pressure is lowered so that the secondary pressure P2 of the fluid flow path L0 approaches the set pressure. At this time, the opening degree of the first opening K1 by the second valve body V2 increases as the secondary pressure P2 increases due to the action of the link mechanism R, and accordingly, the second chamber H2 of the main governor 10 Since the step-down speed increases, the higher the secondary pressure P2, the higher the valve closing speed of the main valve body V0, and the higher the recovery speed (step-down speed) of the secondary pressure P2.

[Second Embodiment]
The pressure regulating equipment 100 according to the second embodiment can realize a large-capacity relief when the secondary side pressure P2 on the secondary side of the fluid flow path L0 is excessively boosted. Hereinafter, different parts will be mainly described with respect to the configuration of the first embodiment, and the same components as those of the first embodiment may be denoted by the same reference numerals and description thereof may be omitted.

  The pressure regulating equipment 100 according to the second embodiment includes the pilot governor 50 shown in FIG. 7, and the pilot governor 50 is mainly configured of the flow path portion body 40 with respect to the first embodiment. And the structure of the main body side connection part 30c is different. Incidentally, in the second embodiment, the flow path portion body 40 does not switch between the first operation posture and the second operation posture as in the first embodiment, and takes only one operation posture. Is.

In the pilot governor 50 according to the second embodiment, the flow path part main body portion 42 of the flow path part main body 40 has three different connection flow path parts S1, S2, S3 through which a fluid flows as shown in FIG. The first opening K1 that connects the two connection flow path portions S1 and S2 selected from the above and the two connection flow path portions S1 and S2 that the first opening K1 communicates with each other, A second opening K2 that communicates the two connection flow path portions S1 and S3 selected from the connection flow path portions.
When the description is added, the flow path part main body 42 has the first connection flow path part S1, the second connection flow path part S2, and the third connection flow path part S3 as the connection flow path parts. A first opening K1 that communicates the connection flow path part S1 and the second connection flow path part S2, and a second opening K2 that communicates the first connection flow path part S1 and the third connection flow path part S3. Have.
The flow path part main body 42 is connected to the main body side of the governor main body 30 in an operating posture in which the first opening K1 is opened and closed by the first valve body V1 and the second opening K2 is opened and closed by the second valve body V2. It is attached to the part 30c.
Here, in the mounting state (the state shown in FIG. 7) of the flow path part main body part 42 with respect to the main body side connection part 30c, the main body side connection part 30c includes the fourth chamber H4 of the governor main body 30 (an example of a pressure regulation chamber). And a first connection flow path part S1 of the flow path part main body 42 are provided, and in the second embodiment, the pilot governor 50 is controlled to the fourth chamber H4. The pressure is configured to be introduced through the first connection flow path part S1.

Although illustration is omitted, the pilot governor 50 of the second embodiment connects the secondary pressure introduction path L2 connected to the secondary side of the fluid flow path L0 to the first connection flow path portion S1, and the second A drive pressure introduction path L3 for introducing drive pressure to a second chamber (not shown: an example of a main pressure regulating chamber) of the main governor (not shown) is connected to the connection flow path portion S2, and a third connection flow path By opening the part S3 to the atmosphere, it functions as a pilot governor 50 capable of large-capacity relief that opens the secondary side to the atmosphere when the secondary pressure P2 is excessively increased.
When the explanation is added about the operation, when the secondary side pressure P2 of the fluid flow path L0 is lower than the set pressure, the secondary side pressure P2 becomes the secondary side pressure introduction path L2, the first connection flow path part S1, the communication. The holes L5 are transmitted in the order described, and introduced into the fourth chamber H4 of the pilot governor 50. Due to the difference between the biasing force by the second biasing spring G2 and the force due to the secondary pressure P2 introduced into the fourth chamber H4. The second diaphragm D2 moves toward the fourth chamber H4, the first valve body V1 opens the first opening K1, and the second valve body V2 closes the second opening K2. As a result, the gas in the second chamber (not shown) of the main governor (not shown) becomes the driving pressure introduction path L3, the second connection flow path part S2, the first connection flow path part S1, and the secondary pressure introduction. The path L2 is transmitted in the order described, and is discharged to the secondary side of the fluid flow path L0. The operation of the fluid flow path L0 is the same as the operation described in the positive pressure regulator of the first embodiment. The secondary side pressure P2 is increased so as to approach the set pressure.
On the other hand, when the secondary side pressure P2 of the fluid flow path L0 rises above the set pressure, the secondary side pressure P2 passes through the secondary side pressure introduction path L2, the first connection flow path part S1, and the communication hole L5 in the order described. Is transmitted to the fourth chamber H4 of the pilot governor 50, and the second diaphragm D2 is moved to the third chamber H3 side by the difference between the biasing force by the second biasing spring G2 and the force by the pressure of the fourth chamber H4. The first valve body V1 closes the first opening K1, and the second valve body V2 closes the second opening K2. That is, in the second embodiment, when the secondary pressure P2 of the fluid flow path L0 is higher than the set pressure and when the pressure is not excessively increased, the first opening K1 and the second opening K2 are used. The urging force of the urging spring F of the link mechanism R is appropriately set so that both of them are closed. Thereby, the gas in the second chamber (not shown) of the main governor (not shown) is not discharged to the secondary side of the fluid flow path L0. Here, the second chamber (not shown) of the main governor (not shown) is passed through a primary pressure introduction path (not shown) provided with a throttle (not shown) to the primary of the fluid flow path L0. By adopting a configuration connected to the side, the pressure in the second chamber (not shown) of the main governor approaches the primary pressure P1 at a constant speed. As a result, the pressure is reduced so that the secondary pressure P2 of the fluid flow path L0 approaches the set pressure.
Further, when the secondary pressure P2 of the fluid flow path L0 is excessively increased, the secondary side gas of the fluid flow path L0 describes the secondary pressure introduction path L2, the first connection flow path portion S1, and the communication hole L5. In this order, and is introduced into the fourth chamber H4 of the pilot governor 50. Due to the difference between the urging force of the second urging spring G2 and the force of the pressure of the fourth chamber H4, the second diaphragm D2 becomes the third chamber H3. The first valve body V1 closes the first opening K1, and the second valve body V2 opens the second opening K2. As a result, the secondary side of the fluid flow path L0 is opened to the atmosphere via the secondary pressure introduction path L2, the first connection flow path part S1, and the third connection flow path part S3, and the secondary side large-capacity relief is released. Is realized.

[Another embodiment]

(1) You may comprise a 1st seating site | part operation member and a 2nd seating site | part operation member so that it may have a bleed hole.
In addition to this, the first seating site operating member and the second seating site operating member are configured to be detachable from the outside of the specific flow path site, so that the first seating site operating member having different bleed hole diameters and the above-mentioned It can be easily replaced with the second landing site operating member.
As a result, the amount of bleed can be easily adjusted by a simple operation such as replacing the seating part operating member from the outside.

(2) In the first embodiment, when the secondary pressure P2 is introduced into the fourth chamber H4 (an example of the pressure regulating chamber) of the pilot governor 50, a dedicated second secondary pressure introduction passage is provided. The structural example which introduce | transduces a secondary side pressure via L2b was shown. However, in the fourth chamber H4 of the pilot governor 50, as in the second embodiment (shown in FIG. 7), a communication hole L5 is formed in the main body side connection portion 30c, and the secondary side pressure is passed through the communication hole. P2 may be introduced.
Further, in the second embodiment, in the fourth chamber H4 of the pilot governor 50, the communication hole L5 is formed in the main body side connection portion 30c, and the secondary pressure P2 is introduced through the communication hole L5. An example configuration is shown.
However, when the secondary pressure P2 is introduced into the fourth chamber H4 (an example of the pressure regulating chamber) of the pilot governor 50, the dedicated second second is provided as in the first embodiment (shown in FIGS. 1 to 6). You may comprise so that a secondary side pressure may be introduce | transduced via the secondary side pressure introduction path L2b.

(3) Another embodiment of the link mechanism R of the first embodiment and the second embodiment will be described below. Since the first embodiment and the second embodiment have substantially the same configuration, the first embodiment will be described below as an example.
In the another embodiment, as shown in FIGS. 8 and 9, the link mechanism R opens and closes the first opening K1 of the first valve body V1 or the second valve body V2 (in FIGS. 8 and 9, The first valve body V1) includes a first seating portion operating member T1 that is movable in the opening / closing movement direction by the link mechanism R and is movable in the position of the first seating portion T1a where the valve body is seated in the first opening K1. The seating part operating member T1 is configured to be operated from the outside of the connection flow path parts S1, S2, and S3 (that is, outside the flow path part main body 40), and is configured to move the first seating part T1a in the opening / closing movement direction. ing.
Similarly, the link mechanism R opens and closes by the link mechanism R of a valve body (in FIG. 8, 9, the second valve body V2) that opens and closes the second opening K2 of the first valve body V1 or the second valve body V2. The second seating portion operating member T2 is movable in the direction of the second seating portion T2a where the valve body is seated in the second opening K2, and the second seating portion operating member T2 includes the connection flow path portion S1, The second seating portion T2a is configured to be movable in the opening / closing movement direction in a form operated from the outside of S2 and S3 (that is, outside the flow path portion body 40).
If description is added, the 1st seat part operation member T1 is comprised from the cylindrical member, and the external thread T1b is formed in the cylinder outer periphery, and the 1st seat part operation member T1 is formed in the flow-path part main body 40 in the opening / closing movement direction. It is configured to be able to be screwed into one female screw part. Similarly, the second seating part operation member T2 is composed of a cylindrical member, and a male screw T2b is formed on the outer periphery of the cylinder, and the second female screw formed in the flow path part main body 40 in the opening / closing movement direction. It is configured to be screwable to the part.
The first seating part operation member T1 is configured to adjust the screwed state with respect to the first female screw part, and is configured to be movable in the opening / closing movement direction of the first seating part T1a of the first opening K1. The part operation member T2 is configured to adjust the screwed state with respect to the second female screw part, and is configured to be movable in the opening / closing movement direction of the second seating part T2a of the second opening K2.
By adopting this configuration, the first seating site T1a and the second seating site T2a can be positioned at the same position (position indicated by α in FIG. 8) in the opening and closing movement direction, and the first seating site. T1a and the second seating site T2a can be positioned at positions shifted as shown in FIG. 9 in the opening / closing movement direction. As a result, the reference position of the second diaphragm D2 can be adjusted from the outside of the pilot governor 50 only by rotating the first seating site operating member T1 and the second seating site operating member T2.
In addition, the link ratio, that is, the ratio between the displacement amount of the diaphragm D2 and the displacement amount of the valve body can be changed by rotating the first seating site operation member T1 and the second seating site operation member T2.
In addition, in the said another embodiment, as shown to FIG. 8, 9, although the 1st valve body V1 and the 2nd valve body V2 showed the example comprised as a needle valve, the 1st valve body was shown. V1 and the 2nd valve body V2 can also employ | adopt common valve bodies other than a needle valve.

(4) Further, as shown in FIG. 10, the first seating part operation member T1 may be provided with a bleed opening L6 separately from (or partially sharing) the first opening K1. . That is, the bleed opening L6 functions as a throttle that allows a constant flow rate of fluid to flow regardless of the open / closed state of the first opening K1.
The same applies to the second seating site operation member T2.

(5) The pilot governor 50 according to the second embodiment connects the secondary side of the fluid flow path L0 to the first connection flow path part S1, and the primary side of the fluid flow path L0 to the second connection flow path part S2. And the third connection flow path part S3 is opened to the atmosphere, so that it can be operated as a direct acting type large capacity relief function governor.

(6) In the above embodiment, in the second shaft portion R2, the configuration example in which the elongated hole is provided in the first pivot support portion P1x is shown, but separately, the configuration in which the elongated hole is provided in the second pivot support portion P2x. May be adopted.
That is, in the second shaft portion R2, the link mechanism R functions well by forming a long hole in one of the first pivot support part P1x and the second pivot support part P2x.

(7) In the above embodiment, the flow path switching connection portion 41 has been described as switching between the first operating posture and the second operating posture. However, in the present application, the right range also includes a configuration in which the flow path switching connection portion 41 is provided as a connection portion that maintains either the first operation posture or the second operation posture.

  The configuration disclosed in the above embodiment (including another embodiment, the same shall apply hereinafter) can be applied in combination with the configuration disclosed in the other embodiment, as long as no contradiction occurs. The embodiment disclosed in this specification is an exemplification, and the embodiment of the present invention is not limited to this. The embodiment can be appropriately modified without departing from the object of the present invention.

  The pressure regulating device of the present invention is a pressure regulating device that can improve the disassembly and maintainability by adopting a relatively simple configuration while being able to control the opening degree of a pair of valve bodies separately in a mutually related state. Is effectively available.

10: Main governor 30: Governor main body 38: First opening 40: Channel portion main body 41: Channel switching connection 50: Pilot governor 100: Pressure regulator D2: Second diaphragm F: Biasing spring H4: Fourth Chamber K1: First opening K2: Second opening L0: Fluid flow path L1: Primary side pressure introduction path L2: Secondary pressure introduction path L2a: First secondary pressure introduction path L2b: Second secondary side Pressure introduction path L3: Drive pressure introduction path P2: Secondary pressure Pα: Drive pressure R: Link mechanism R1: First shaft portion R1a: Support portion R2: Second shaft portion R2a: One end portion R2b: Other end portion R3: Connection site S1: Connection channel site S1: First connection channel site S2: Second connection channel site S3: Third connection channel site T1: First seating site operating member T1a: First seating site T2: Second Seating site operating member T2a: second seating site V1: First valve element V2: Second valve element p1: First pivot part p2: Second pivot part

Claims (11)

A pressure regulator that adjusts the secondary pressure of a fluid flow path through which a fluid flows to a set pressure by introducing a control pressure into a pressure regulation chamber formed by dividing the interior of the governor with a diaphragm. ,
A first opening communicating the two connection flow path portions selected from three different connection flow path portions through which the fluid flows;
A second opening communicating two connection flow path portions selected from three connection flow path portions in a state where one is different from the two connection flow passage portions communicating with the first opening;
A first valve body that opens and closes one of the first opening and the second opening;
A second valve body that opens and closes one of the first opening and the second opening;
Both the opening degree by the first valve body and the opening degree by the second valve body are separately related to each other in accordance with the movement of the diaphragm due to the fluctuation of the control pressure introduced into the pressure regulating chamber. A pressure regulating device having a link mechanism for adjustment.   The link mechanism opens one of the first opening and the second opening by the first valve body as the diaphragm moves from the reference position to the pressure regulating chamber side, and A first open / close state in which one of the first opening and the second opening is closed by the second valve body, and the movement from the reference position of the diaphragm to the side opposite to the pressure regulating chamber. Either the first opening or the second opening is closed by the first valve body, and the other one of the first opening and the second opening is opened by the second valve body. The pressure regulator according to claim 1, wherein the pressure regulator is switched to a second open / close state.   In the first open / closed state, the link mechanism is configured such that the greater the amount of movement of the diaphragm from the reference position to the pressure regulating chamber side, the more the first opening or the second opening is caused by the first valve body. The opening degree of the diaphragm is adjusted to be increased, and in the second open / close state, the second valve element causes the second valve body to move as the amount of movement of the diaphragm from the reference position to the side opposite to the pressure regulating chamber increases. The pressure regulating apparatus according to claim 2, wherein the pressure adjustment device is adjusted so as to increase an opening degree of one of the first opening and the second opening. As the connection flow path part, a first connection flow path part, a second connection flow path part, and a third connection flow path part are separately provided, and the first connection flow path part and the second connection flow path part are provided. A flow path part body having the first opening that communicates, and the second opening that communicates the second connection flow path part and the third connection flow path part, the link mechanism and the first valve A separate governor body including the body and the second valve body,
The flow path portion main body has a first operating posture in which the first opening is opened and closed by the first valve body and the second opening is opened and closed by the second valve body, and the first opening is 3. A flow path switching connecting portion that is mounted on the governor body by switching between a second operating posture that is opened and closed by the second valve body and the second opening is opened and closed by the first valve body. 3. The pressure regulating device according to 3. The control pressure introduced into the pressure regulating chamber is a secondary pressure that is a pressure on the secondary side of the fluid flow path,
Each of the connection flow path parts has a first connection flow path part, a second connection flow path part, and a third connection flow path part,
In the first operation mode in which the first opening is opened and closed by the first valve body and the second opening is opened and closed by the second valve body, the fluid flow path is disposed in the first connection flow path portion. A secondary pressure introduction path that communicates with the secondary side is connected, and a drive pressure introduction path that introduces a drive pressure to a main pressure regulating chamber of a main governor different from the governor is connected to the second connection flow path portion. The pressure regulating apparatus according to claim 3 or 4, wherein a primary side pressure introduction path that is connected and communicates with a primary side of the fluid flow path is connected to the third connection flow path portion. The control pressure introduced into the pressure regulating chamber is a secondary pressure that is a pressure on the secondary side of the fluid flow path,
Each of the connection flow path parts has a first connection flow path part, a second connection flow path part, and a third connection flow path part,
In the second operating posture in which the first opening is opened and closed by the second valve body and the second opening is opened and closed by the first valve body, the fluid flow path is disposed in the first connection flow path portion. A secondary pressure introduction path that communicates with the secondary side is connected, and a drive pressure introduction path that introduces a drive pressure to a main pressure regulating chamber of a main governor different from the governor is connected to the second connection flow path portion. The pressure regulating apparatus according to claim 3 or 4, wherein a primary side pressure introduction path that is connected and communicates with a primary side of the fluid flow path is connected to the third connection flow path portion. As the connection flow path part, a first connection flow path part, a second connection flow path part, and a third connection flow path part are separately provided, and the first opening portion includes the first connection flow path part and the second connection flow path part. The connection flow path part is communicated, and the second opening communicates the first connection flow path part and the third connection flow path part,
The first valve body opens and closes the first opening, and the second valve body opens and closes the second opening.
A secondary pressure introduction path communicating with the secondary side of the fluid flow path is connected to the first connection flow path portion, and a main pressure regulating chamber of a main governor different from the governor is connected to the second connection flow path portion. The pressure regulating apparatus according to claim 2, wherein the pressure regulating device is connected to a driving pressure introduction path for introducing a driving pressure to the first pressure passage, and the third connection channel portion is open to the atmosphere. As the connection flow path part, a first connection flow path part, a second connection flow path part, and a third connection flow path part are separately provided, and the first opening portion includes the first connection flow path part and the second connection flow path part. The connection flow path part is communicated, and the second opening communicates the first connection flow path part and the third connection flow path part,
The first valve body opens and closes the first opening, and the second valve body opens and closes the second opening.
A secondary side pressure introduction path communicating with the secondary side of the fluid flow path is connected to the first connection flow path portion, and a primary side pressure communicating with the primary side of the fluid flow path to the second connection flow path portion The pressure regulating apparatus according to claim 2 or 3, wherein an introduction path is connected, and the third connection flow path portion is open to the atmosphere. The link mechanism is
One of the first opening and the second opening is closed by the first valve body, and the other of the first opening and the second opening is closed by the second valve body. A second shaft portion that swings in a direction that forms a predetermined angle with respect to a first axial direction that is an axial direction of the first shaft portion that extends along the moving direction of the diaphragm in a reference state. ,
The second shaft portion is supported slidably with respect to the support portion in a state where one end portion thereof is supported by the support portion of the first shaft portion, and the other end portion of the second shaft portion of the governor. It is connected via a biasing means to a connection part formed in the main body,
A first pivoting portion pivotally supporting the valve shaft of the first valve body on one side of a region divided by a straight line connecting the one end portion and the other end portion on the swing surface of the second shaft portion; The pressure regulating device according to any one of claims 1 to 8, further comprising a second pivotally supporting portion that pivotally supports the valve shaft of the second valve body on the other side of the region divided by the straight line on the swing surface. apparatus. Of the first valve body or the second valve body, the valve body that opens and closes the first opening portion is opened and closed by the link mechanism, and the first seating portion of the first seat portion on which the valve body seats is seated at the first opening portion. A first seating portion operating member whose position is freely movable;
The pressure regulating device according to claim 9, wherein the first seating part operation member is configured to be operated from outside the connection flow path part and configured to be able to move the first seating part in the opening / closing movement direction. Of the first valve body or the second valve body, the valve body that opens and closes the second opening portion is opened and closed by the link mechanism, and the second seating portion of the second seat portion on which the valve body seats is seated. A second seating portion operating member that is movable in position;
11. The pressure regulating device according to claim 9, wherein the second seating part operation member is configured to be operated from outside the connection flow path part, and is configured to be able to move the second seating part in the opening / closing movement direction. apparatus.

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