JPH056342U - Differential pressure / pressure transmitter - Google Patents

Abstract

(57) [Summary] [Purpose] The object of the present invention is to prevent the body body and the transmitter from rotating due to an external force so that the process fluid leaks and the orientation of the transmitter does not change. A pair of covers 2 and 3 provided on both sides of a body body 1 are fastened together by a plurality of fastening members 4 arranged on the outer circumference of the body body 1 to sandwich the body body 1 and The transmitter 5 is connected to one end. By attaching the name plate 36 to the outer peripheral surface of the body body 1 and contacting the end of the name plate 36 with the fastening member 4, the body body 1 and the transmitter portion 5 do not rotate even if the transmitter portion 5 receives a large external force. To do.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a differential pressure / pressure transmitter for detecting the pressure of various process fluids. Is.

[0002]

[Prior art]

  For example, when trying to measure the flow rate of fluid in a pipe, install an orifice plate inside the pipe. Place it as a fluid resistance, measure the pressure difference upstream and downstream of this resistance, The flow rate is derived based on Therefore, this kind of differential pressure / pressure The transmitter generally applies each process fluid pressure to the high and low pressure side barrier diaphragms. The movement of the internal sealing liquid in the body is given by the semiconductor pressure provided by dividing the enclosed circuit. It is configured to take out as an electrical output due to the strain of the force sensor (example: actual public JP 59-30444 A). Then, install this kind of differential pressure / pressure transmitter on site. When it is placed, it is usually attached via a bracket as shown in FIG. Sanawa In the figure, 1 is a body main body, 2 and 3 are fastening portions on the left and right side surfaces of the body main body 1. A pair of members integrally fastened with through bolts 4 and nuts (not shown) as materials The cover 5 and the transmitter 5 are connected to the body 1, and the pressure difference The transmitter 6 is configured, and the stanchion 7 is reinforced by the U bolt 9 via the bracket 8. It is firmly fixed. In addition, 10 is a flange for fluid connection, 11 is a fluid introduction hole. It

[0003]

[Problems to be solved by the device]

  However, in such a conventional differential pressure / pressure transmitter 6, a pair of covers is used. -2, 3 are fastened and fixed with bolts 4 and nuts, and these covers 2, 3 Since the body 1 is clamped by the operator, it can be When riding on the communication part 5, a large external force F acts on the transmission part 5 and the body 1 Since the body main body 1 rotates with the contact surface between the cover and the covers 2 and 3 as a sliding surface, The fluid leaks or the orientation of the transmitter 5 is wrong, making it difficult to see the meter 12. There was a problem that   Therefore, conventionally, as a method for solving such a problem, the outer peripheral surface of the body 1 is A rotation-preventing recess is provided in this, and a part of the peripheral surface of the bolt 4 is inserted into this recess. However, in such a configuration, the number of man-hours for processing the body 1 is increased, and the manufacturing cost is increased. There was a problem that the cost was high.

[0004]   Therefore, the present invention has been made in view of the above conventional problems, The purpose is to rotate the body and transmitter even if external force is applied. Differential pressure / pressure transmitter that prevents leakage of process fluid and orientation of transmitter To provide.

[0005]

[Means for Solving the Problems]

  The present invention has been made to achieve the above object, and the first one is a body B. A pair of covers provided on both sides of the main body are attached to the outer circumference of the body to make a plurality of fastenings. The body body is clamped by being fastened by a member, and the transmitter is provided at one end of the body body. In the differential pressure / pressure transmitter connected to the To the fastening member with its end or the head of the set screw attached. The abutment prevents the body body from rotating.   The second idea is to attach a pair of covers on both sides of the body to the outer circumference of the body. The body body is clamped by being fastened by a plurality of fastening members provided, In a differential pressure / pressure transmitter in which the transmitter is connected to one end of the main body, Contact the cover or the fastening member to prevent the body body from rotating. It is the one.

[0006]

[Action]

  In the first invention, the name plate or the set screw for fixing the name plate is a fastening portion. The contact with the material prevents the body body from being restricted from rotating. In the second device, The receiver case comes into contact with the cover or the fastening member to prevent rotation of the body. Stop.

[0007]

【Example】

  Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.   FIG. 1 is an external perspective view showing a first embodiment of a differential pressure / pressure transmitter according to the present invention, and FIG. Sectional drawing which shows the attachment structure of a nameplate, FIG. 3 is sectional drawing of a body. Na In the figure, the same components as those in FIG. 5 are designated by the same reference numerals.

In FIG. 3, the body 1 is formed by integrally joining a high-pressure side body 1A and a low-pressure side body 1B by electron beam welding or the like, and pressure-receiving side surfaces 20 and 21 provided at the center of both side surfaces. Barrier diaphragms 22 and 23 are arranged with their peripheral portions welded and fixed, and an inner chamber 24 is provided at the central joint portion of both bodies 1A and 1B. The inner chamber 24 is partitioned by a center diaphragm 25 into a high-pressure side body inner chamber 24A and a low-pressure side body inner chamber 24B. Reference numeral 26 denotes a header cover welded and fixed to the outer periphery of the body body 1, and the case 27 of the transmitting portion 5 is screwed and connected to the outer peripheral surface of the header cover 26. Reference numeral 28 denotes a pressure sensor for measuring a differential pressure incorporated in the header cover 26. High pressure P _H and low pressure P _L of the process fluid 40 are applied to the front and back surfaces of a semiconductor diaphragm (not shown) of the pressure sensor 28. It is configured to be transmitted via the internal sealing liquids 31A and 31B such as silicon oil sealed in the sealing circuits 29 and 30 in the main body 1, respectively. Reference numeral 32 is a bolt for fastening and fixing the covers 2 and 3 attached to each side surface of the body body 1 to the bracket 8, and 33 is a nut screwed to the tip of the bolt 4. The structure of the differential pressure / pressure transmitter 6 itself is the same as that of the conventional device.

[0009]   Now, as shown in FIGS. 1 and 2, a differential pressure / A name plate displaying the manufacturing date, manufacturing number, manufacturer, etc. of the pressure transmitter 6. 36 are fixedly arranged by a plurality of setscrews 37. This name plate Reference numeral 36 also serves as a rotation preventing member of the body body 1, and the front end thereof has four volutes. One of the bolts 4A located on the front side of the upper side of the bolt 4 is abutted from the rear side. It The four bolts 4 are formed on the outer circumference of the body 1 by the plate of the name plate 36. They are arranged at a distance substantially equal to or slightly smaller than the thickness.

[0010]   Thus, in the differential pressure / pressure transmitter 6 having such a configuration, the transmitter 5 is When an external force is applied downward, the front end of the name plate 36 hits the bolt 4A. Therefore, it is possible to securely prevent the body 1 and the transmitter 5 from rotating downward. You can stop. Therefore, the process fluid 40 may leak or It does not change its shape, and a rotation-preventing recess is provided on the outer circumference of the body 1. It is not necessary to form it for each bolt 4.   Here, the end portion of the name plate 36 is brought into contact with the bolt 4A, but it is not limited to this. Without contacting the head of the set screw 37 fixing the name plate 36 with the bolt 4A. Of course, it may be done.

[0011]   FIG. 4 is a partially cutaway side view showing a second embodiment of the present invention. This example is outgoing The lower surface of the rear end surface of the case 27 forming the part 5 is a peripheral surface of the bolt 4B located on the lower front side. It is abutted from the front. In this case, not only the bolt 4B but also the covers 2 and 3 May be brought into contact with. Reference numeral 40 designates the case 27 and the case connecting portion 4 of the body body 1. It is a screw fixed to 1.   Also in such a configuration, as in the above-described embodiment, the body 1 and the transmitter 5 are The rotation can be prevented.

[0012]

[Effect of device]

  As explained above, according to the differential pressure / pressure transmitter of the present invention, A name plate is provided on the outer circumference, and a set screw for fixing this plate or plate The head of the body against the bolts that are placed on the outer periphery of the body and that fasten and fix the cover. Or place the transmitter case in contact with the cover or bolt. Since it is made, even if a large external force is applied to the transmitter, the body and transmitter will rotate. Can be reliably prevented. Therefore, the process fluid may leak or be transmitted. The direction of the part does not change, and the rotation prevention recess is on the outer periphery of the body. Since it is not necessary to process and form the body, the body body can be easily manufactured.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a first embodiment of a differential pressure / pressure transmitter according to the present invention.

FIG. 2 is a sectional view showing a mounting structure of a name plate.

FIG. 3 is a cross-sectional view of a body body.

FIG. 4 is a partially cutaway side view showing a second embodiment of the present invention.

FIG. 5 is a perspective view showing a mounting structure for a conventional differential pressure / pressure transmitter.

[Explanation of symbols]

1 body A few covers 4 through bolts 5 transmitter 6 Differential pressure / pressure transmitter 7 stanchions 22, 23 barrier diaphragm 27 cases 36 name plate 37 Set screw

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Creator Mikio Tanaka             4-28-1, Nishirokugo, Ota-ku, Tokyo Sanmu             Honeywell Co., Ltd. Kamata factory (72) Creator Daiichi Katsuta             4-28-1, Nishirokugo, Ota-ku, Tokyo Sanmu             Honeywell Co., Ltd. Kamata factory

Claims (2)

[Scope of utility model registration request] 1. A pair of covers provided on both sides of a body body are fastened by a plurality of fastening members arranged on the outer periphery of the body body to sandwich the body body, and a transmitter is connected to one end of the body body. In the differential pressure / pressure transmitter, the name plate is attached to the outer peripheral surface of the body by a set screw, and the end of the name plate or the head of the set screw is brought into contact with the fastening member to prevent the body from rotating. The differential pressure / pressure transmitter characterized by the above. 2. A pair of covers provided on both sides of the body body are fastened together by a plurality of fastening members arranged on the outer periphery of the body body to sandwich the body body, and a transmitter is connected to one end of the body body. In the differential pressure / pressure transmitter, the case of the transmitting unit is brought into contact with the cover or the fastening member to prevent the body body from rotating.